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Mathematics

Construct a triangle ABC having BC = 5 cm, ∠B = 90° and ∠C = 45°. Draw all possible lines of symmetry.

Symmetry

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Answer

Construct a triangle ABC having BC = 5 cm, ∠B = 90° and ∠C = 45°. Draw all possible lines of symmetry. Symmetry, Foundation Mathematics R.S. Aggarwal ICSE Class 7.

∠A = 180° - (90° + 45°) = 45°.

Since ∠A = ∠C = 45°, this is an isosceles right-angled triangle.

∴ It has 1 line of symmetry.

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