EM-3037

Testing for a right angle

E Math · Secondary 4 · Medium · Testing for a right angle

1. Yes, because $6^2 + 8^2 = 11^2$.
2. Yes, because $6 + 8 = 14 > 11$.
3. No, because $6^2 + 8^2 \neq 11^2$.
4. No, because the longest side must be 8 cm for a right angle.

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