ACT Prep - Angles

Two angles are supplementary and have a ratio of 1:4. What is the size of the smaller angle?

• 144^o

• 18^o

• 36^o

• 45^o

• 72^o

AB and CD are two parrallel lines intersected by line EF. If the measure of angle 1 is 132^o, what is the measure of angle 2?

• 180^o

• 64^o

• 132^o

• 48^o

• 24^o

In the figure, APB forms a straight line. If the measure of angle APC is eighty-one degrees larger than the measure of angle DPB, and the measures of angles CPD and DPB are equal, then what is the measure, in degrees, of angle CPB?

• 33^o

• 50^o

• 114^o

• 40^o

• 66^o

One-half of the measure of the supplement of angle ABC is equal to the twice the measure of angle ABC. What is the measure, in degrees, of the complement of angle ABC?

• 36^o

• 54^o

• 90^o

• 18^o

• 72^o

If ∠A measures (40−10x)^∘, which of the following is equivalent to the measure of the supplement of ∠A?

• (10x + 140)^o

• (100x)^o

• (10x + 50)^o

• (140 - 10x)^o

• (50 - 10x)^o