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← Geometry & Angles

Mathematics · Hard lesson

Pythagoras & Angle Rules

GCSE-style stretch. Expect multi-step reasoning and exam vocabulary.

5

Questions

~4

Minutes

3

Hints/Q

Confidence tracking, 3-tier hints and instant feedback.

What you'll learn

  • 1a² + b² = c² in right triangles.
  • 2Angles in parallel lines: alternate = equal.
  • 3Interior polygon = (n−2)×180°.
  • 4Exterior sum = 360°.

Question mix

  • Fill the gap×5

How it works

Score ≥ 80% to unlock the next level
  • 1

    Rate your confidence

    Tell us how sure you feel before answering. It powers your weak-topic map.

  • 2

    Use hints if stuck

    Reveal up to 3 progressive hints per question. Using fewer earns more points.

  • 3

    See what went wrong

    Instant feedback solves the exact question you just answered, so nothing stays fuzzy.

Ready when you are. This takes about 4 minutes.