Work through the levels in order. Type your answer and press Check — open the worked solution if you get stuck. Answers like -6, 3/4 or 0.25 are typed exactly as shown. A ⭐ Bonus Challenge at the end is extra credit — skip it if the rest was hard work.
Level 1 · Warm-up
1 How many degrees are there in a right angle?
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A right angle is 90 degrees.
2 How many degrees are there in a straight angle?
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A straight angle is 180 degrees.
3 An angle of 45 degrees is what kind? (acute, right, obtuse or reflex)
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45 degrees is less than 90, so it is acute.
Level 2 · Core
4 An angle of 210 degrees is what kind? (acute, right, obtuse or reflex)
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210 is more than 180 and less than 360, so it is reflex.
5 How many degrees are there in a full turn?
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4 × 90 = 360 degrees.
6 An angle of 130 degrees is what kind? (acute, right, obtuse or reflex)
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130 is more than 90 and less than 180, so it is obtuse.
Level 3 · Challenge
7 An angle measures 70 degrees. What is the size of the reflex angle on the other side of it?
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360 − 70 = 290 degrees.
8 Two angles sit on a straight line. One is 115 degrees. What is the other?
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180 − 115 = 65 degrees.
9 A clock hand turns from 12 to 5. How many degrees has it turned through?
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Each hour step is 360 ÷ 12 = 30 degrees. Five steps: 5 × 30 = 150 degrees.