13
Aug
Class 9 | Chapter 8 | Quadrilaterals | Theorem 8.9
Theorem 8.9: The line segment joining the mid-points of two sides of a triangle is parallel to the third side. Theorem 8.8 Theorem 8.10
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13
Aug
Class 9 | Chapter 8 | Quadrilaterals | Theorem 8.8
Theorem 8.8: A quadrilateral is a parallelogram if a pair of opposite sides is equal and parallel. Theorem 8.7 Theorem 8.9
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13
Aug
Class 9 | Chapter 8 | Quadrilaterals | Theorem 8.7
Theorem 8.7: If the diagonals of a quadrilateral bisect each other, then it is a parallelogram. Theorem 8.6 Theorem 8.8
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13
Aug
Class 9 | Chapter 8 | Quadrilaterals | Theorem 8.5
Theorem 8.5: If in a quadrilateral, each pair of opposite angles is equal, then it is a parallelogram. Theorem 8.4 Theorem 8.6
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13
Aug
Class 9 | Chapter 8 | Quadrilaterals | Theorem 8.3
Theorem 8.3: If each pair of opposite sides of a quadrilateral is equal, then it is a parallelogram. Theorem 8.2 Theorem 8.4
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13
Aug
Class 9 | Chapter 8 | Quadrilaterals | Theorem 8.1
Theorem 8.1: A diagonal of a parallelogram divides it into two congruent triangles. Home Theorem 8.2
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10
Aug
Class 9 | Chapter 8 | Quadrilaterals | Exercise 8.2 | Question 7
Question 7: ABC is a triangle right angled at C. A line through the mid-point M of hypotenuse AB and parallel to BC intersects AC at D. Show that (i) D is the mid-point of AC (ii) MD ⊥ AC…
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