Diagram

Sum

Construct traingle ABC, when : AB = BC = CA = 4.5 cm. Measure all the angles of the triangle. Are they equal?

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#### Solution

**Steps of Construction:**

(1) Draw a line AB = 4.5 cm.

(2) Using compasses and taking BC as centre, draw an arc of 4.5 cm radius.

(3) With AC as centre, draw an arc of 4-5 cm radius, which cuts the previous arc at C.

(4) Join AC and BC.

(5) Measurement, ∠A = ∠B = ∠C = 60°.

Concept: Classification of Triangles (On the Basis of Sides, and of Angles)

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