---
title: "The Right Angle"
description: "Learning video: We check it with a set square. A rectangle has 4 right angles, one in each corner. How many right angles does this triangle have?"
canonical: "https://www.mathapex.app/en/math-stories/geometry/the-right-angle/"
language: "en"
video: "https://www.mathapex.app/media/stories/videos/en/the-right-angle.4be9d8d2.mp4"
duration: "PT27S"
---

# The Right Angle

Learning video 59 · Geometry · Grade 4 · 0:27

## Read the story

A right angle looks like the corner of a sheet of paper.

We check it with a set square.

A rectangle has 4 right angles, one in each corner.

**How many right angles does this triangle have?**

## Answer and working

Correct! Just one, at the bottom left. The other corners are pointy.