Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

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**Alex2704****Member**- Registered: 2017-01-02
- Posts: 4

Hey,I've been revising for my math semester paper and I have just come across a problem I can't solve :

Prove that in the triangle ABC,IH || BC <=>

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