Interactive Angles
Learn Acute, Obtuse, Complementary & Supplementary Angles
An interactive tool for teaching students about different types of angles, using a protractor, and understanding angle relationships.
Interactive Angle Learning Tool
Explore and understand different types of angles with hands-on manipulation and visual feedback.
Acute Angles
Less than 90°. Learn to identify and measure angles smaller than a right angle.
Right Angles
Exactly 90°. Understand the importance of right angles in geometry.
Obtuse Angles
Between 90° and 180°. Explore angles larger than a right angle.
Reflex Angles
Between 180° and 360°. Learn about angles that curve the other way.
Key Concepts
Complementary Angles
Two angles that add up to 90°. If one angle is 30°, its complement is 60°.
Supplementary Angles
Two angles that add up to 180°. Together they form a straight line.
Vertically Opposite
When two lines intersect, opposite angles are equal.
Angles at a Point
Angles around a point always add up to 360°.