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Simple Angles Review

Acute and Obtuse Angles

Use the animation below to explore and review the differences between acute and obtuse angles. Use the checkboxes to make the examples visible or invisible. Use the sliders to adjust and change the angles.

Reflex Angles

Use the animation below to explore reflex angles.

Right and Straight angles

Straight angles are the angles formed by three points on a straight line. The angle is equal to 180. Right angles have a value of 90 and they resemble a corner.

Revolution Angles

A revolution is a 360 angle - one complete revolution or full circle.

Summary of Angles

Summary of Angles