Mathematics
Construct a triangle PQR having PQ = 6 cm, ∠P = ∠R = 60° and draw all possible lines of symmetry.
Symmetry
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Answer
∠Q = 180° - (60° + 60°) = 60°.
Since all angles are 60°, this is an equilateral triangle.
∴ It has 3 lines of symmetry.
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