# 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

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

Angles

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

Drawing and Measuring Angles with a Protractor

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

Types of Angles

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

### Middle School

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.

Complementary and Supplementary Angles

Define and identify complementary and supplementary angles.

Lines and Angles

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

Using Theorems for Angles Formed by Parallel Lines

Use definitions and theorems of angles formed when a transversal intersects parallel lines.

### Community Resources

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