Question

1. Prove that if the diagonals of a Parallelogram are equal, then it is a Rectangle,
2. Construct a triangle PQR in which QR is 6 cm, <Q=60% and PR-PQ=2 cm. Write the steps of
Construction​

Answer 1

Answer:

Steps of construction:

Step 1: Draw AB=4.2 cm.

Step 2: With A as the centre and radius equal to 8 cm, draw an arc.

Step 3: With B as the centre and radius equal to 6 cm, draw another arc, cutting the previous arc at C.

Step 4: Join BC.

Step 5: With A as the centre and radius equal to 5 cm, draw an arc.

Step 6: With C as the centre and radius equal to 5.2 cm, draw another arc, cutting the previous arc at D.

Step 7: Join AD and CD.

Thus, ABCD is the required quadrilateral.

Answer 2

Answer:

6 + 2 +2 = 10 cm is correct answer ok