Rectangles are a special type of parallelogram. They have a special property that we will prove here: the diagonals of rectangles are equal in length. Rectangles are a special type of … [Read more...] about Diagonals of Rectangles are of Equal Length

# Rectangles

A parallelogram in which all the angles are right angles is called a rectangle.

Since a general property of all parallelograms is that all adjacent angles are supplementary (add up to 180°), it is obvious that if a parallelogram has **one** right angle (90°), then **all** the other angles are also 90°

In addition to the general properties of parallelograms, in a rectangle, the diagonals are of equal length,

We will show these properties using triangle congruence.

--

*Now that we've explained the basic concept of rectangles in geometry, let's scroll down to work on specific geometry problems relating to this topic.*