Angle Maker
Drag the pink ray to turn it, or use the arrow keys.
Grade
Every level: naming, measuring and making angles, reflex angles, straight lines, triangles and angles at a point.
Question1/ 8Right0
Your stars
- Name the angle Grade 3—
- Measure the angle Grade 4—
- Make an angle Grade 4—
- Angles on a straight line Grade 5—
- Angles in a triangle Grade 5—
- Angles at a point Grade 5—
Seven of eight earns the star. Stars are saved on this device, and to your account when you are signed in.
Remember
- Acute is less than 90°, a right angle is exactly 90°, obtuse is between 90° and 180°, and straight is 180°.
- Reflex angles are bigger than 180° and less than 360°.
- Measure from 0 on the base ray and count round to the other ray.
- Angles on a straight line add up to 180°.
- The angles in a triangle add up to 180°, and angles round a point add up to 360°.