Question

someone explain this to me

Answer 1

All angles in a triangle add up to what value?

Answer 2

180?

Answer 3

So do a + b + c = 180 and solve for the missing value.

Answer 4

but thats not a triangle

Answer 5

Where a b and c represent the degrees in the angle.

Answer 6

Yes, that is a triangle, it has 3 sides.

Answer 7

oh ok

Answer 8

well i thought it was called something else because the sides are supposed to be like equal

Answer 9

Those are equilateral triangles, but that means that all the angles are the same.
Regardless of the type of triangle, if it has 3 sides, all the angles will add up to 180 degrees. So solve it that way - good luck!
The answer is 80 degrees so you can check your work.

Answer 10

ok thanks!