The measure of angle A is 72 degrees. Classify this angle:

This angle is an acute angle.

Supplementary angles add up to 180 degrees. Calculate the supplement to an angle that is 120 degrees.

The supplement to an angle that is 120 degrees can be found by subtracting 120 degrees from 180 degrees:

180 degrees - 120 degrees = 60 degrees

Therefore, the supplement to an angle that is 120 degrees is 60 degrees.

Complementary Angles add up to 90 degrees. Looking at the diagram below, which angle is the complement to angle BOC?

*
Captionless Image

It is impossible to determine the complement to angle BOC without additional information regarding the measures of other angles in the diagram.

All triangles add up to 180 degrees. Calculate the missing value of angle B.

*
Captionless Image

To calculate the missing value of angle B, we can use the fact that the sum of the angles in a triangle is always 180 degrees. Therefore, we have:

B + 80 + 30 = 180

Combining the like terms and simplifying, we get:

B + 110 = 180

Subtracting 110 from both sides, we get:

B = 70

Therefore, the missing value of angle B is 70 degrees.

All triangles add up to 180 degrees. Calculate the missing value of angle B.

*
A is 100 degrees
B is blank
C is 55 degrees

To calculate the missing value of angle B, we can use the fact that the sum of the angles in a triangle is always 180 degrees. Therefore, we have:

A + B + C = 180

Substituting the given values, we get:

100 + B + 55 = 180

Combining the like terms:

B + 155 = 180

Subtracting 155 from both sides:

B = 180 - 155

Simplifying:

B = 25

Therefore, the missing value of angle B is 25 degrees.

This shape has 4 sides. One pair of opposite sides is parallel. Classify this shape:

*
Captionless Image