# 9.5: Angle Classification

Difficulty Level:

**At Grade**Created by: CK-12Estimated6 minsto complete

%

Progress

**Practice**Angle Classification

Practice

Progress

Estimated6 minsto complete

%

Practice Now

Turn In

### Notes/Highlights Having trouble? Report an issue.

Color | Highlighted Text | Notes | |
---|---|---|---|

Show More |

Acute Angle

An acute angle is an angle with a measure of less than 90 degrees.Obtuse angle

An obtuse angle is an angle greater than 90 degrees but less than 180 degrees.Perpendicular

Perpendicular lines are lines that intersect at a angle. The product of the slopes of two perpendicular lines is -1.Right Angle

A right angle is an angle equal to 90 degrees.Straight angle

A straight angle is a straight line equal to .### Image Attributions

Show
Hide
Details

Description

Classify acute, right, obtuse, and straight angles.

Learning Objectives

None

Related Materials

Difficulty Level:

At Grade
Authors:

Subjects:

## Concept Nodes:

Grades:

Date Created:

Oct 29, 2012
Last Modified:

Sep 09, 2016
Vocabulary

None

Files can only be attached to the latest version of Modality