Scholars trail · ages 13–15
Angles practice for students
Angle facts let students find missing angles without measuring: angles on a straight line add to 180°, around a point to 360°, and in a triangle to 180°.
Number Quest's angle questions practise all of these, plus naming acute, right, obtuse and reflex angles.
No sign-up, no ads. Works in any browser.
What the questions practise
- Complementary and supplementary angles
- Angles in a triangle
- Angles around a point
- Acute, right, obtuse and reflex angles
Try some example questions
Tap a question to see the answer and how it works.
1. AnglesTwo angles of a triangle are 54° and 70°. What is the third angle?236°66°36°56°
Answer: 56°. 180 − 54 − 70 = 56°.
2. AnglesWhat type of angle is 60°?ObtuseReflexAcuteRight
Answer: Acute. 60° is acute.
3. AnglesWhat type of angle is 100°?ObtuseReflexRightAcute
Answer: Obtuse. 100° is obtuse.
Tips for parents and teachers
- Sketch the diagram.
- Say which rule you're using.
- Check the total adds up.
Why Number Quest
Free, with no ads and no in-app purchases. Five trails from age 5 to 16+, five ways to play, a daily goal that builds a streak, buddies to unlock and a friendly weekly leaderboard. Questions are made fresh on the device, so there is always something new.
An Android app on Google Play is coming soon. Until then, play free right here in your browser.