Question

What is the answer for question no.3 (i),(ii),(iii)

Answer 1

Answer:

I) Given a quadrilateral ABCD where

Angle D + angle B =180°

If ABCD is a parallelogram, then opposite angle of a parallelogram are equal

So, angle B = angle D

Given :- angle D + angle B =180°

Putting angle D = angle B

Angle B + angle B =180°

2angle B =180°

Angle B = 180°÷2

=90

ii) opposite side of parallelogram is equal

So, AB equal to DC and AD is equal to BC

But AD is not equal to BC

So, ABCD is not a parallelogram

iii) opposite side of parallelogram is equal

Given angle A =70° and angle C =65°

But angle A is not equal to angle C

So, ABCD is not a parallelogram.