The measure of the largest angle of a triangle is 40° more than the measures of the smallest angle, and the measures of the remaining angle is 20° more than the measure of the smallest angle. find the measure of each angle.

40, 60 and 80 degrees.

Step-by-step explanation:

Let the smallest angle be x degrees. Then:

The 3 angles are x, x + 40 and x + 20.

As there are 180 degrees in a triangle:

x + x + 40 + x + 20 = 180

3x = 180 -40--20 = 120

x = 40 degrees.

The other 2 angles are  60 and 80 degrees.

it would open into a square depending on the type of envelope i’m not sure about the second part