Determining Angles in Shapes

Each worksheet has 11 problems identifying the quantity of acute, obtuse right or reflex angles in a shape.

Student Objectives

Identify acute, right, obtuse, and reflex angles in a drawing.
Count how many of each type of angle a shape has.
Use angle size clues (smaller than 90°, exactly 90°, between 90° and 180°, greater than 180°) to sort angles correctly.
Pay attention to where the angle is formed at a vertex so you don’t count the wrong corner.