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8. D, E and F are the mid-points of the sides BC, CA and AB, respectively of an equilateral triangle ABC. Show that ∆ DEF is also an equilateral triangle.
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Jul
8. D, E and F are the mid-points of the sides BC, CA and AB, respectively of an equilateral triangle ABC. Show that ∆ DEF is also an equilateral triangle. 8. D CA and AB E and F are the mid-points of the sides BC respectively of an equilateral triangle ABC. Show that ∆ DEF [...]
7. Through A, B and C, lines RQ, PR and QP have been drawn, respectively parallel to sides BC, CA and AB of a ∆ ABC as shown in Fig.8.5. Show that BC = 1/2 QR.
01
Jul
7. Through A, B and C, lines RQ, PR and QP have been drawn, respectively parallel to sides BC, CA and AB of a ∆ ABC as shown in Fig.8.5. Show that BC = 1/2 QR. 7. Through A b and c`. CA and AB of a ∆ ABC as shown in Fig.8.5. Show that [...]
6. E is the mid-point of the side AD of the trapezium ABCD with AB || DC. A line through E drawn parallel to AB intersect BC at F. Show that F is the mid-point of BC. [Hint: Join AC]
01
Jul
6. E is the mid-point of the side AD of the trapezium ABCD with AB || DC. A line through E drawn parallel to AB intersect BC at F. Show that F is the mid-point of BC. [Hint: Join AC] 6. E is the mid-point of the side AD of the trapezium ABCD with AB [...]
5. E and F are points on diagonal AC of a parallelogram ABCD such that AE = CF. Show that BFDE is a parallelogram.
01
Jul
5. E and F are points on diagonal AC of a parallelogram ABCD such that AE = CF. Show that BFDE is a parallelogram. 5. E and F are points on diagonal AC of a parallelogram ABCD such that AE = CF. Show that BFDE is a parallelogram. July 1, 2021 Category: Chapter 8 - [...]
4. ABCD is a rhombus in which altitude from D to side AB bisects AB. Find the angles of the rhombus.
01
Jul
4. ABCD is a rhombus in which altitude from D to side AB bisects AB. Find the angles of the rhombus. 4. ABCD is a rhombus in which altitude from D to side AB bisects AB. Find the angles of the rhombus. July 1, 2021 Category: Chapter 8 - Quadrilaterals , Maths , NCERT Class [...]
3. The angle between two altitudes of a parallelogram through the vertex of an obtuse angle of the parallelogram is 60^o. Find the angles of the parallelogram.
01
Jul
3. The angle between two altitudes of a parallelogram through the vertex of an obtuse angle of the parallelogram is 60^o. Find the angles of the parallelogram. 3. The angle between two altitudes of a parallelogram through the vertex of an obtuse angle of the parallelogram is 60^o. Find the angles of the parallelogram. July [...]
2. ABCD is a trapezium in which AB || DC and ∠A = ∠B = 45^o. Find angles C and D of the trapezium.
01
Jul
2. ABCD is a trapezium in which AB || DC and ∠A = ∠B = 45^o. Find angles C and D of the trapezium. 2. ABCD is a trapezium in which AB || DC and ∠A = ∠B = 45^o. Find angles C and D of the trapezium. July 1, 2021 Category: Chapter 8 - [...]
1. One angle of a quadrilateral is of 108^o and the remaining three angles are equal. Find each of the three equal angles.
01
Jul
1. One angle of a quadrilateral is of 108^o and the remaining three angles are equal. Find each of the three equal angles. 1. One angle of a quadrilateral is of 108^o and the remaining three angles are equal. Find each of the three equal angles. July 1, 2021 Category: Chapter 8 - Quadrilaterals , [...]
14. Opposite angles of a quadrilateral ABCD are equal. If AB = 4 cm, determine CD.
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Jul
14. Opposite angles of a quadrilateral ABCD are equal. If AB = 4 cm, determine CD. 14. Opposite angles of a quadrilateral ABCD are equal. If AB = 4 cm determine CD. July 1, 2021 Category: Chapter 8 - Quadrilaterals , Maths , NCERT Class 9 ,
13. Diagonals of a quadrilateral ABCD bisect each other. If ∠A = 35o, determine ∠B.
01
Jul
13. Diagonals of a quadrilateral ABCD bisect each other. If ∠A = 35o, determine ∠B. 13. Diagonals of a quadrilateral ABCD bisect each other. If ∠A = 35o determine ∠B. July 1, 2021 Category: Chapter 8 - Quadrilaterals , Maths , NCERT Class 9 ,