Question

What is the value of P?

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Answer 1

Well we know that the sum of the three interior angles of a triangle always adds to 180 degrees. Also, the angle value a straight line is also 180 degrees.

So if there are two angles that constitute a straight line, the sum of them are always 180 degrees.
We can use this fact to find the two unknown interior angles other than p, and then subtract those two unknown angles from 180 degrees to solve for p.

Does that help?

Answer 2

So the answer is 60 Degrees.

Answer 3

No, close but i believe you miscalculated a step.
Subtract the outside angles from 180 to get the inside angles.
The whole inside of the triangle should add up to 180, so subtract those numbers from 180 and that will be your answer.