Question

if the sum of two angles of a triangle is equal to the third angle then the triangle is​

Answer 1

Answer:

an isoscles triangle is this

Answer 2

Answer:

Let in a triangle ABC,the sum of two angles is equal to the third angle.

i.e. ∠A=∠B+∠C ....(1)

We know ∠A+∠B+∠C=180

⇒∠A+∠A=180

....From (1)

⇒2∠A=180

⇒∠A=190

(Right angle)

Hence, triangle ABC is a right-angled triangle.

Step-by-step explanation:

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