so, your answers are A). and C)., because for example, why are all squares rectangles?
*the reason being that a rectangle is just a stretched out square, and it still remains a parallelogram, as well as 4 straight sides.
All rectangles are parallelograms, no matter which side it is flipped on. It will also, have always 4 straight sides, which are pairs of parallel sides.
These facts are proven! :) Please if possible, please rate this answer as brainliest! Thank you!
