standard_description: Understand that by similarity, side ratios in right triangles are properties of the angles in the triangle, leading to definitions of trigonometric ratios for acute angles.
problem_activity: Problem 1
Use the following angles to answer the questions below.
[IMG]
Write the letters of the angles that are:
right angles: _____________________
acute angles: _____________________
obtuse angles: _____________________
straight angles: _____________________
Problem 2
Draw an additional example of each type of angle below.
a.   Right angle:
b.   Obtuse angle:
c.   Acute angle:
d.   Straight angle:


aligns: no