Question

if one angle of a triangle is equal to the sum of the other two angle , then the triangle is :

A. an isosceles triangle
B. an obtuse angled triangle
C. an equilateral triangle
D. a right angle

(please answer correctly)

Thanks....​

Answer 1

Answer:

d) A right angle

Step-by-step explanation:

Because its one angle is 90°

So ,

<1 + <2 +<3 = 180°

90° + <2 + <3 = 180°

<2 + <3 = 180 - 90

<2 + <3 = 90°

↪ <2 + <3 = <1

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