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The angles of triangle are such that one is average of other two, then the angles are: 1. π/6, π/3, π/2 2. π/3, π/3, π/2 3. π/6, π/3, π/4 4. π
Question

The angles of triangle are such that one is average of other two, then the angles are:
1. π/6, π/3, π/2
2. π/3, π/3, π/2
3. π/6, π/3, π/4
4. π/2, π/2, π/3

A.

4

B.

3

C.

2

D.

1

Correct option is D

Concept Used:

Sum of angles of triangle = 180 degrees

Solution:

As we know, π=180°\pi=180\degree​​

Checking all the options, we get

1. π/6, π/3, π/2 = 30, 60, and 90 = 180 degrees

2. π/3, π/3, π/2 = 60, 60, and 90 = 210 degrees

3. π/6, π/3, π/4 = 30, 60, and 45 = 135 degrees

4. π/2, π/2, π/3 = 90, 90, and 60 = 240 degrees

So, only Statement 1. is possible for this triangle which gives 180 degrees. 

Thus, option(d) is correct.

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