Question

all rectangle are parallelograms ,but all parallelograms are not rectangles . justify this statements

Answer 1

All rectangles are said to be parallelograms because rectangle has two pair of parallel sides and parallelogram also.
But all parallelograms are not rectangles
Because when we add two right angled triangles we get a rectangle while on a parallelogram it not happens.

Thus,it proves that all rectangles are parallelograms, but all parallelograms are not rectangles.

Answer 2

Answer:

rectangle has 2 pairs of parallel lines and also a parallelogram has but, parallelogram does not make rectangle when we add 2 right angled triangles

Step-by-step explanation:

hence prooved, all rectangles are parallelograms but all parallelograms are not rectangles