Question
Find the area of an equilateral triangle having each side x cm.
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Given: P is the centre of the circle.
Chord AB and chord CD intersect on the diameter at the point E. ∠AEP ≅ ∠DEP
To prove: AB = CD
Construction: Draw seg PM ⊥ chord AB, A-M-B
seg PN ⊥ chord CD, C-N-D
$\text{ar}(\text{CYXE})=2\text{ar}(\triangle\text{FCB})$

