Question

can anybody help me to solve all of these questions....

Answer 1

Answer:

Step-by-step explanation:

1)If diagonals of a quadrilateral are perpendicular bisector of each other, then the quad. is a rhombus.

2)As l is parallel to m,

2a=120(corresponding angles)

a=60°

3)angle ACD is the exterior angle

Thus ACD = sum of 2 interior angles i.e 40+70=110°

4)Steps of const.

Draw a line segment of 6.8cm with scale and draw its perpendicular bisector

5)3rd quadrant

6)Volume of cube is side3

10^3= 1000cm3