IP EMaths Notes (Upper Sec, Year 3-4): 12) Similarity and Congruency
08 Nov 2025, 00:00 Z
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Q: What does IP EMaths Notes (Upper Sec, Year 3-4): 12) Similarity and Congruency cover?
A: Use similarity ratios and congruency criteria to prove geometric relationships and scale figures accurately.
Similarity compares shapes with proportional sides and equal angles, while congruency proves exact matches. Keep diagrams annotated with tick marks, matching angle symbols, and explicit ratio statements so the reader can follow the logic without guessing.
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These notes align with SEAB GCE O-Level Mathematics (4052) content used in IP programmes (exams from 2026).
Status: SEAB O-Level Mathematics 4052 syllabus (exams from 2026) checked 2025-11-30 - scope unchanged; remains the reference for these notes.
Quick reference
- Similarity shortcut: write when all corresponding angles match and the three side ratios are equal.
- Triangle similarity criteria:
- : three angle matches force similarity.
