Question

exterior angle of a triangle is 100° and interior apposite angles are equal. Find all the angles of the triangle?
I WANT FULL ANSWER STEP BY STEP PLEASE ​

Answer 1

Answer:

100- 180 =80 exterior angle

Step-by-step explanation:

80- 180= 100 interior angle.

Answer 2

Answer:

a=50°

b=50°

c=80°

Step-by-step explanation:

Let a,b and c ve interior angles and d be the exterior angle equal to 100°

We know,

a+b+c=180°

c+d=180°

Or, c=180°-d

Or, c=180°-100°

Or, c=80°

Now,

a+b+c=180°

a+b=180°-c

a+b=100°[As, c=80°]

2a=100°[As, a=b]

a=50°