Formalising understanding of triangles from KS2

12 questions

1. TU is a line segment. a° = ___°.
2. These three angles lie around a point on a full turn. b° = ___°.
3. This diagram shows four angles around two line segments that meet at an intersection. Which of these statements are correct for angle c°?
4. This diagram shows four angles around two line segments that meet at an intersection. Which of these statements are correct for angle d?
5. PQ and RS are straight line segments. e° = ___°.
6. PQ and RS are straight line segments. Match each angle to its size.
7. Which of these statements are true about this triangle?
8. This triangle is scalene. Which of these are possible values of b?
9. Which of these statements are correct for this triangle?
10. An equilateral triangle has one side of length 40 cm. Which of these statements are correct?
11. An isosceles triangle has an angle of 90°, and a side of length 19 cm. What is the size of one of its other angles, in degrees? ___°.
12. Three different triangles each have an angle of 30°. Match the name of each triangle to their possible angles.

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