Angles

Learn and practice identifying, drawing and, measuring different types of angles and become an expert in angles with interactive resources from GeoGebra.

Upper Elementary

GRADES 4-5

Adding and Subtracting Angles

Use addition and subtraction to find unknown measures of non-overlapping angles.

探索

GR. 4-5

Adding Adjacent Angles

练习

GR. 4-5

Finding the Missing Angle

Angles

Identify and label the vertex, rays, and interior and exterior of an angle. Use appropriate naming conventions to identify angles.

探索

GR. 4-5

Exploring Parts of an Angle

探索

GR. 4-5

Discovering Ways to Name Angles

练习

GR. 4-5

Identifying Parts of an Angle

练习

GR. 4-5

Naming Angles

Drawing and Measuring Angles with a Protractor

Draw and measure angles using a protractor. Understand that a circle measures 360 degrees.

探索

GR. 4-5

Drawing Angles Game

探索

GR. 4-5

Determining Angle Measures Without Tools

探索

GR. 4-5

Drawing Angles: Hot and Cold Activity

练习

GR. 4-5

Measuring Angles Using a Protractor

练习

GR. 4-5

Drawing Angles Using a Protractor

Types of Angles

Identify and draw angles (acute, right, obtuse, and straight).

探索

GR. 4-5

Naming Angles According to Their Size

探索

GR. 4-5

Identifying Angles Around Us

练习

GR. 4-5

Creating Angles on a Grid

Middle School

GRADES 6-8

Angle Sum Properties of Triangles, Quadrilaterals, and Polygons

Use a variety of triangles, quadrilaterals, and other polygons to draw conclusions about the sum of the measures of the interior angles.

探索

GR. 6-8

Sum of Interior Angles of a Triangle

探索

GR. 6-8

Sum of Interior Angles of a Polygon

练习

GR. 6-8

Finding the Missing Angle of a Polygon

Angles Formed by Parallel Lines

Identify the congruent and supplementary relationships of the angles formed by cutting parallel lines by a transversal.

探索

GR. 6-8

Corresponding Angles Formed By Parallel Lines and a Transversal

探索

GR. 6-8

Vertical Angles Formed by Parallel Lines and a Transversal

探索

GR. 6-8

Alternate Angles Formed by Parallel Lines and a Transversal

探索

GR. 6-8

Supplementary Angles Formed by Parallel Lines and a Transversal

练习

GR. 6-8

Determining Measures of Angles Formed by Parallel Lines and a Transversal

Complementary and Supplementary Angles

Define and identify complementary and supplementary angles.

探索

GR. 6-8

Complementary and Supplementary Angles

练习

GR. 6-8

Finding Complementary and Supplementary Angles

Lines and Angles

Define and identify alternate interior, alternate exterior, corresponding, adjacent and vertical angles.

探索

GR. 6-8

Vertical Angles

Pairs of Angles

Use properties, definitions, and theorems of angles and lines to solve problems related to adjacent, vertical, complementary, supplementary, and linear pairs of angles.