What part of the right angle is the angle: a) 30 degrees. b) 45 degrees. c) 50 degrees. What part of the unfolded corner?

The right angle is 90 °. To determine how much of the angles are, you need to equate and truncate the angles.

a) 30/90 = 1/3;

b) 45/90 = 1/2;

c) 50/90 = 5/9.

The expanded angle is 180 °. Therefore:

a) 30/180 = 1/6;

b) 45/180 = 1/4;

d) 50/180 = 5 18.

Answer: at an angle of 90 ° a) 1/3; b) 1/2; c) 5/9. At an angle of 180 ° a) 1/6; b) 1/4; c) 5/18.