🔢 Mathematics · Geometry

Understanding angles (age 11+)

Apply the properties of angles at a point (360°), on a straight line (180°), and vertically opposite angles to find unknown angles in multi-step problems

Typical age: 11–13 years

“If your child is given a diagram with several angles marked at crossing lines and some unknown, can they use the rules about straight lines and crossing lines to find all the missing angles step by step?”

0 / 3 mastered

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Needs first

Angle Sum RulesREQUIRED
Builds on KS2 knowledge that angles at a point sum to 360° and on a line to 180°
Understanding angles (age 10+)REQUIRED
KS3 angle facts extend KS2 angles at a point, on a line, and vertically opposite

Unlocks next

Angles with parallel linesREQUIRED
Parallel line angles build on basic angle properties at points and lines
Angle sums in triangles and polygonsREQUIRED
Polygon angle sums require fluency with basic angle properties