Question

If one angle of a triangle is equal to sum of other two angles, then the triangle is a) An obtuse angled triangle. b) a right angled triangle b) An isosceles triangle d) an equilateral triangle.

Answer 1

Answer:

b)a right angled triangle

Step-by-step explanation:

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Answer 2

rigt angle triangle

step by step explaination:-

In triangle ABC

<A=<B+<C —(i)

by angle sum property

<A +<B +<C =180°

by equation i ,we get

<A +<A=180°

2 <A=180°

<A=90°

proved right angle triangle