Angles (Year 4)
Identify, compare and measure acute, right, obtuse and reflex angles.
The questions below are generated to match the National Curriculum for Year 4 and get harder as you progress from Rookie to Guru.
Worked examples
RookieRead and interpret directly.
What is the angle SUM of a triangle?
- 180°
- 360°
- 90°
- 270°
Answer: 180°. Angles in a triangle add to 180°.
ProCompare and infer.
How many lines of symmetry does a RECTANGLE (non-square) have?
- 2
- 4
- 1
- 0
Answer: 2. Rectangle: horizontal + vertical = 2 lines of symmetry (diagonals don't work).
GuruMulti-step reasoning.
Why do parallel lines never meet?
- Because they are always the same distance apart — that distance never changes.
- Because they are straight.
- Because they were drawn that way.
- Because angles are equal.
Answer: Because they are always the same distance apart — that distance never changes.. Parallel = equidistant. Equal distance means they never converge.
Related skills
Frequently asked questions
- What is angles?
- Identify, compare and measure acute, right, obtuse and reflex angles.
- How can my child practise angles at home?
- Work through the examples below, then start a free adaptive session. Northstar adjusts the difficulty automatically and tracks mastery over time.
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