Basic 5Mathematics18 min

Angle Protractor Lab

Learners identify and measure angles in classroom doors, road signs, and roof shapes.

Measure the door angle.

A classroom door opens wider than a right angle. Learners use a protractor to classify and draw the angle.

Angle Protractor Lab illustration

Learners identify and measure angles in classroom doors, road signs, and roof shapes.

Classify 120 degrees.

  1. A right angle is 90 degrees.
  2. 120 degrees is greater than 90 and less than 180, so it is obtuse.