Question

Which angle in this quadrilateral is a right angle? Angle A Angle B Angle C Angle D

Answer 1

A rectangle is one. If that is one of the options, this would be the correct answer.

Explanation:

A quadrilateral can be proved to be a rectangle in several ways. Here are three simple methods: 1) Demonstrate that all angles are 90°; 2) Demonstrate that one set of sides is parallel and that two opposite angles are 90°; and 3) Demonstrate that the diagonals are bisected and equal in length.

Answer 2

A rectangle is one. If that is one of the options, this would be the correct answer.

Explanation:

A quadrilateral can be proved to be a rectangle in several ways. Here are three simple methods: 1) Demonstrate that all angles are 90°; 2) Demonstrate that one set of sides is parallel and that two opposite angles are 90°; and 3) Demonstrate that the diagonals are bisected and equal in length.