Question

Construct an equilateral triangle whose perimeter is 15 cm?

Answer 1

Equilateral triangle means all the sides of a triangle are equal. The steps of construction are as follows: 1.draw a straight line PQ of 15 cm. 2. at P draw an angle RPQ of 60 deg, at Q draw an angle SQP of 60 deg. 3. draw the angle bisectors of ∠RPQ and ∠SQP. 4. it intersect at point A. 5. draw the perpendicular bisector of PA and QA. 6. it intersect PQ at B and C respectively. 7. Now join AB and AC. ABC is the required triangle.