Question

In a right angled isosceles triangle shown below, what is the value of ∠ACO? *

a) 135
b) 90
c) 45
d) 60​

Answer 1

Answer:

a) 135

............,.....

Answer 2

Answer:

a)135

Step-by-step explanation:

Let BAC =x

therefore ,ACB=x ( angles of isosceles triangles are equal)

Now,

90+x+x=180 (Angle Sum Property)

90+2x=180

2x=90

x=45

Therefore,

90+45=135 (Exterior Angle = sum of two interior angles.

Therefore, answer is option a) 135