# How to prove a rectangle

It’s important to keep them in mind when trying to figure out How to prove a rectangle.

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## How to Prove that a Quadrilateral Is a Rectangle

Let \$D'\$ be the point such that \$ABCD'\$ is a rectangle. Then \$D'\$ is on \$AD\$ because \$\angle A\$ is right. From \$CD'=AB\$ (hold in rectangle) and \$AB=CD\$ (given), we see

## Theorems Dealing with Rectangles

👉 Learn how to solve problems with rectangles. A rectangle is a parallelogram with each of the angles a right angle. Some of the properties of rectangles ar

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