📋 المحتوى المنظم
📖 محتوى تعليمي مفصّل
جبر
نوع: محتوى تعليمي
جبر: أوجد قيمة x في كل مما يأتي:
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نوع: QUESTION_HOMEWORK
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21
نوع: QUESTION_HOMEWORK
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22
نوع: QUESTION_HOMEWORK
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23
نوع: QUESTION_HOMEWORK
23) فضاء: يدور قمر اصطناعي في مدار فوق خط الاستواء، أوجد قيمة x، وهي قياس القوس المرئي من الأرض بالنسبة للقمر الاصطناعي.
الربط مع الحياة
نوع: NON_EDUCATIONAL
الربط مع الحياة
أول رائد فضاء سعودي هو صاحب السمو الملكي الأمير سلطان بن سلمان بن عبدالعزيز آل سعود (ديسكفري) رحلة رقم STS-51G في 29 من رمضان 1405هـ الموافق 17 يونيو 1985م.
برهان
نوع: محتوى تعليمي
برهان: اكتب برهانًا ذا عمودين لكل حالة من حالات النظرية 8.14
(إرشاد: ارسم وترًا يصل نقطتي تقاطع القاطعان أو المماس أو المماسان مع الدائرة).
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نوع: QUESTION_HOMEWORK
حالة 1
المعطيات: AD و AE قاطعان للدائرة
المطلوب: m∠A = ½ (mDE - mBC)
25
نوع: QUESTION_HOMEWORK
حالة 2
المعطيات: FM مماس للدائرة و FL قاطع لها
المطلوب: m∠F = ½ (mLH - mGH)
26
نوع: QUESTION_HOMEWORK
حالة 3
المعطيات: RS و RV مماسان للدائرة
المطلوب: m∠R = ½ (mSWT - mST)
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نوع: QUESTION_HOMEWORK
27) برهان: اكتب برهانًا حرًا للنظرية 8.13
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نوع: QUESTION_HOMEWORK
28) تمثيلات متعددة: في هذا السؤال ستستكشف العلاقة بين النظريتين 8.6, 8.12،
نوع: METADATA
وزارة التعليم
Ministry of Education
2025 - 1447
نوع: METADATA
الفصل 8 الدائرة
نوع: METADATA
222
🔍 عناصر مرئية
A circle with two secant lines intersecting at an external point. The angle formed by the secants outside the circle is 35°. The larger intercepted arc is labeled (9x + 26)°. The smaller intercepted arc is labeled 4x°.
A circle with one tangent line and one secant line intersecting at an external point. The angle formed by the tangent and secant outside the circle is 3°. The larger intercepted arc is labeled (5x - 6)°. The smaller intercepted arc is labeled (4x + 8)°.
A circle with two tangent lines intersecting at an external point. The angle formed by the two tangents outside the circle is labeled (9x - 1)°. One intercepted arc is labeled 94°. The other intercepted arc is labeled 2x°. Based on visual appearance, 94° is the minor arc and 2x° is the major arc, but this leads to a contradiction when applying the theorem (Angle = 1/2 (Major Arc - Minor Arc) and Major Arc + Minor Arc = 360). If 94° is the minor arc, then the major arc is 360 - 94 = 266°. If 2x° is the major arc, then 2x = 266°, so x = 133. Then the angle (9x-1) = 9(133)-1 = 1196°. The formula gives 1/2(266-94) = 86°. This is inconsistent. The diagram labels are ambiguous for a consistent solution.
A diagram showing the Earth as a circle and a satellite as an external point. Two tangent lines extend from the satellite to the Earth. The angle formed by the two tangents at the satellite is 12°. The arc visible from Earth, which is the minor intercepted arc, is labeled x°.
A circle with two secant lines, AD and AE, intersecting at an external point A. Points B, C, D, E are labeled on the circle, with B and C on the secant AE, and D and E on the secant AD. The diagram supports the proof for Theorem 8.14, Case 1.
A circle with a tangent line FM and a secant line FL intersecting at an external point F. Points G, H, L, M are labeled. M is the point of tangency. G and H are points on the circle along the secant FL. The diagram supports the proof for Theorem 8.14, Case 2.
A circle with two tangent lines, RS and RV, intersecting at an external point R. Points S, T, V, W are labeled. S and V are points of tangency. T and W are points on the major arc between S and V. The diagram supports the proof for Theorem 8.14, Case 3.
A circle with center O. A line AB is tangent to the circle at point A. A line segment AC is a chord of the circle, with C being another point on the circle. An arrow indicates that AB is a line, and AC is a chord. The diagram illustrates the angle formed by a tangent and a chord.
A circle with two chords, AB and CD, intersecting inside the circle at point E. The arc AC is labeled 50°. The arc BD is labeled 30°. The angle AEB, formed by the intersection of the chords, is labeled x°.
📄 النص الكامل للصفحة
--- SECTION: جبر ---
جبر: أوجد قيمة x في كل مما يأتي:
--- SECTION: 20 ---
20
--- SECTION: 21 ---
21
--- SECTION: 22 ---
22
--- SECTION: 23 ---
23) فضاء: يدور قمر اصطناعي في مدار فوق خط الاستواء، أوجد قيمة x، وهي قياس القوس المرئي من الأرض بالنسبة للقمر الاصطناعي.
--- SECTION: الربط مع الحياة ---
الربط مع الحياة
أول رائد فضاء سعودي هو صاحب السمو الملكي الأمير سلطان بن سلمان بن عبدالعزيز آل سعود (ديسكفري) رحلة رقم STS-51G في 29 من رمضان 1405هـ الموافق 17 يونيو 1985م.
--- SECTION: برهان ---
برهان: اكتب برهانًا ذا عمودين لكل حالة من حالات النظرية 8.14
(إرشاد: ارسم وترًا يصل نقطتي تقاطع القاطعان أو المماس أو المماسان مع الدائرة).
--- SECTION: 24 ---
حالة 1
المعطيات: AD و AE قاطعان للدائرة
المطلوب: m∠A = ½ (mDE - mBC)
--- SECTION: 25 ---
حالة 2
المعطيات: FM مماس للدائرة و FL قاطع لها
المطلوب: m∠F = ½ (mLH - mGH)
--- SECTION: 26 ---
حالة 3
المعطيات: RS و RV مماسان للدائرة
المطلوب: m∠R = ½ (mSWT - mST)
--- SECTION: 27 ---
27) برهان: اكتب برهانًا حرًا للنظرية 8.13
a. المعطيات: AB مماس لـ OO، و AC قاطع لـ OO
المطلوب: إثبات أن m∠CAB = ½ mCA
b. برهن نظرية 8.13 إذا كانت الزاوية في فرع (a) زاوية منفرجة.
--- SECTION: 28 ---
28) تمثيلات متعددة: في هذا السؤال ستستكشف العلاقة بين النظريتين 8.6, 8.12،
a. هندسيًا: انقل الشكل المجاور إلى دفترك. ثم ارسم ثلاثة أشكال متتالية بحيث يتحرك موقع D مقتربًا من C، مع بقاء B, C, A ثابتة في مواقعها.
b. جدوليًا: قدّر قياس CD لكل من الدوائر المتتالية، سجّل قياسات AB و CD في جدول، ثم أوجد قيمة x لكل من هذه الدوائر.
c. لفظيًا: صف العلاقة بين mAB وقيمة x عندما يقترب mCD من الصفر. ما نوع ∠AEB عندما يكون 0 = mCD؟
d. تحليليًا: اكتب برهانًا جبريًا لإثبات ما توصلت إليه في الفقرة c.
وزارة التعليم
Ministry of Education
2025 - 1447
الفصل 8 الدائرة
222
--- VISUAL CONTEXT ---
**DIAGRAM**: Untitled
Description: A circle with two secant lines intersecting at an external point. The angle formed by the secants outside the circle is 35°. The larger intercepted arc is labeled (9x + 26)°. The smaller intercepted arc is labeled 4x°.
Key Values: [object Object], [object Object], [object Object]
Context: Illustrates the theorem for the measure of an angle formed by two secants intersecting outside a circle, which is half the difference of the measures of the intercepted arcs.
**DIAGRAM**: Untitled
Description: A circle with one tangent line and one secant line intersecting at an external point. The angle formed by the tangent and secant outside the circle is 3°. The larger intercepted arc is labeled (5x - 6)°. The smaller intercepted arc is labeled (4x + 8)°.
Key Values: [object Object], [object Object], [object Object]
Context: Illustrates the theorem for the measure of an angle formed by a tangent and a secant intersecting outside a circle, which is half the difference of the measures of the intercepted arcs.
**DIAGRAM**: Untitled
Description: A circle with two tangent lines intersecting at an external point. The angle formed by the two tangents outside the circle is labeled (9x - 1)°. One intercepted arc is labeled 94°. The other intercepted arc is labeled 2x°. Based on visual appearance, 94° is the minor arc and 2x° is the major arc, but this leads to a contradiction when applying the theorem (Angle = 1/2 (Major Arc - Minor Arc) and Major Arc + Minor Arc = 360). If 94° is the minor arc, then the major arc is 360 - 94 = 266°. If 2x° is the major arc, then 2x = 266°, so x = 133. Then the angle (9x-1) = 9(133)-1 = 1196°. The formula gives 1/2(266-94) = 86°. This is inconsistent. The diagram labels are ambiguous for a consistent solution.
Key Values: [object Object], [object Object], [object Object]
Context: Illustrates the theorem for the measure of an angle formed by two tangents intersecting outside a circle, which is half the difference of the measures of the intercepted arcs. The labels in this specific diagram appear to be inconsistent for a straightforward application of the theorem.
**DIAGRAM**: Untitled
Description: A diagram showing the Earth as a circle and a satellite as an external point. Two tangent lines extend from the satellite to the Earth. The angle formed by the two tangents at the satellite is 12°. The arc visible from Earth, which is the minor intercepted arc, is labeled x°.
Key Values: [object Object], [object Object]
Context: Illustrates the application of the theorem for the measure of an angle formed by two tangents intersecting outside a circle to a real-world scenario involving a satellite and Earth.
**DIAGRAM**: Untitled
Description: A circle with two secant lines, AD and AE, intersecting at an external point A. Points B, C, D, E are labeled on the circle, with B and C on the secant AE, and D and E on the secant AD. The diagram supports the proof for Theorem 8.14, Case 1.
Context: Visual aid for proving Theorem 8.14, Case 1, which states the relationship between the angle formed by two secants intersecting outside a circle and the measures of their intercepted arcs.
**DIAGRAM**: Untitled
Description: A circle with a tangent line FM and a secant line FL intersecting at an external point F. Points G, H, L, M are labeled. M is the point of tangency. G and H are points on the circle along the secant FL. The diagram supports the proof for Theorem 8.14, Case 2.
Context: Visual aid for proving Theorem 8.14, Case 2, which states the relationship between the angle formed by a tangent and a secant intersecting outside a circle and the measures of their intercepted arcs.
**DIAGRAM**: Untitled
Description: A circle with two tangent lines, RS and RV, intersecting at an external point R. Points S, T, V, W are labeled. S and V are points of tangency. T and W are points on the major arc between S and V. The diagram supports the proof for Theorem 8.14, Case 3.
Context: Visual aid for proving Theorem 8.14, Case 3, which states the relationship between the angle formed by two tangents intersecting outside a circle and the measures of their intercepted arcs.
**DIAGRAM**: Untitled
Description: A circle with center O. A line AB is tangent to the circle at point A. A line segment AC is a chord of the circle, with C being another point on the circle. An arrow indicates that AB is a line, and AC is a chord. The diagram illustrates the angle formed by a tangent and a chord.
Context: Visual aid for proving Theorem 8.13, which states that the measure of an angle formed by a tangent and a chord drawn to the point of tangency is half the measure of its intercepted arc.
**DIAGRAM**: Untitled
Description: A circle with two chords, AB and CD, intersecting inside the circle at point E. The arc AC is labeled 50°. The arc BD is labeled 30°. The angle AEB, formed by the intersection of the chords, is labeled x°.
Key Values: [object Object], [object Object], [object Object]
Context: Visual aid for exploring the relationship between the angle formed by two chords intersecting inside a circle and the measures of their intercepted arcs, as described by Theorem 8.6.