If the angle of a quadrilateral are equal, how do you prove that it is a rectangle?
1 Answer
Jul 5, 2018
There needs to be either one right angle or the diagonals have to be congruent.
Explanation:
Let's say you have quadrilateral ABCD. If the opposite angles are congruent, then it is automatically a parallelogram as well.
According to the properties of a rectangle, it needs to have either one right angle or congruent diagonals.
Prove that two sides are perpendicular. To find this, you can use the slope formula (
Do the distance formula of the two diagonals. If they come out to be the same answer, then they are congruent.