Question

construct an isosceles triangle ABC in which AB=AC and B C=7.8cm∆8 =80°​

Answer 1

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⇒ We have given that given △ABC is isosceles triangle.

⇒ ∠A = 90∘ [Given]

⇒ then, ∠B = ∠C = 45

∘

[ ∵ Two angles of isosceles triangle are equal]

⇒ Steps of construction are given below :-

⇒ Take a line segment BC = 7.8cm.

⇒ Construct angles of 80°

∘

at points B and C which is meet at point A.

⇒ Measure line segment AB and AC.

⇒ We get, AB=AC=4.8cm