← Back to Class 4🔒
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Topic 7
Lines, Angles & Symmetry
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Step 1 · Learn
Read the ideas
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The Building Blocks
Points, lines, rays, segments, the alphabet of geometry.
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Street Maps
Parallel, perpendicular and intersecting lines.
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The Meeting Point
Count corners and sides in any polygon.
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The Missing Slice
Subtract to find the missing angle.
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Angle Sum
Know two angles? Subtract from 180° to find the third.
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The Mirror Grid
Fold in half, do both sides match?
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Step 2 · Practice
Try the quests
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Step 3 · Boss Battle
Beat the boss
🛡️ 🛡️ 🛡️ 3 shields — lose all → 60-second cooldown
Round 1
A symmetric design has 2 lines of…
🔒Round 2
A stone archway is carved as a regular…
🔒Round 3
A triangular door has a right angle in…
🔒Round 4
GEOM marks five points A, B, C, D and E…
🔒Round 5
Four beams meet at one point. The four…
🔒Round 6
Beam A is parallel to Beam B. Beam B is…
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