Question

prove all of them
11)if the diagnose of a parallelogram bisect each other at 90degree to that it is a rhombus
12)each angle of rectangle is a right angle
13)diagnols of a rectangle area is equal

I want all the proves from 1 to 13
pls answer as much as you can.

Answer 1

Hey☺ here is your answer..And ask again one by one all question because I can not attach more than one pic..