What is an acute angle?
Use the grid to draw an acute angle.
What is an obtuse angle?
Use the grid to draw an obtuse angle.

What is the measure of this angle?
What is the measure of this angle?
What is the measure of this angle?
What is the measure of this angle?
What is a right angle?
Use the grid to draw a right angle.
What is a straight angle?
Draw a straight angle.
Find the area of the above triangle.