Will mark u brainliest and 20 ! for the right answer only!

Well, we know that the sum of all three angles in a triangle equals 180, that means that in this case the other two angles together equal 180 - 100 = 80 degrees.

Further, if these two angles are equal, the measure of each unknown angle is 80/2 = 40 degrees.

Hope this helps!

The answer for the unknown angle is 40 degrees.

:)

I HOPE I HELPED!

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.

3/20

step-by-step explanation:

well, there are 20 outcomes, and 3 of them you want. so, 3/20