Question

7. Find all the three angles of an equilateral triangle.
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Answer 1

Explanation:

let ABC is an equilateral triangle

∴AB=BC=AC

(all sides of equilateral triangle are equal)

To prove

∠A=∠B=∠C

proof=AB=AC→(i)

⇒∠C=BC

⇒∠B=∠A→(ii)

from(i)&(ii)

∠A=∠B=∠C

angle opposite to equal sides are equal).

Answer 2

Question :-

Find all the three angles of an equilateral triangle.

Solution :-

We know, the sum of all angles of an equilateral triangle is 180°

Total number of angles of a triangle is 3 .

therefore, each equal angle = $\frac{180 \degree}{3}$

= 60°

Answer :-

Three angles of an equilateral triangle is 60° each .

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