Nora measured the angles of a triangle. Two of the angles measured 20° What was the measure of the third angle of Nora’s triangle?

140°

Step-by-step explanation:

The sum of angle of a triangle is equal to 180°.

Two of the angles measured 20°.

We need to find the measure of the third angle of Nora’s triangle. let the third angle is x. So,

20+20+x = 180

40+x = 180

x = 180-40

x = 140°

So, the third angle of the triangle is 140°.

g

step-by-step explanation:

i belive those are the ones that are under 90 degreese.