Learners name seven different angles in three different ways and then classify each angle as acute, obtuse, right or straight. They solve one word problem.

This lesson plan provides students with an opportunity to practice drawing and measuring triangles and angles. It also shows pictures and gives definitions of each type of angle and triangle.

Here is a site that clearly and thoroughly explains the trigonometric functions of acute angles within a right triangle. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point...

Provides theorems and examples relating to the sine and cosine of complementary angles.