Question

are all rectangles, parallelogram give reason for answer​

Answer 1

Answer:

All rectangles can be parallelograms but all parallelograms can't be rectangles.

because

Rectangles and Parallelograms opposite sides are equal , rectangles all have 90 degrees angle whereas parallelograms some have 90degrees but some different.

So,

All rectangles can be parallelograms but all parallelograms can't be rectangles.

I HOPE THIS ANSWER HELPS YOU