Lines and Angles

Lines and Angles

Find the missing angles with a triangle on a line

A triangle is sitting on a line. Find the missing angles. Sample:

Missing angle in a triangle

Find the missing angle in a triangle.

Geometric Objects

Take a look at some basic geometric objects: line, ray, point, etc.

Complementary Angles - the definition

What are complementary angles? Find out here.

Angles on a line

Find the missing angle on a line. Sample:

Why is the sum always 180°?

This applets demonstrates why the sum of the angles in a triangle is 180°.

Google Matched Ad

Syndicate content