Determine whether the following statements are true or false. If false, explain why. a) A pair of vertical angles may also form a linear pair.
I
b) If two angles are supplementary and congruent, the measure of each angle is 90°.
c) If a ray divides an angle into two complementary angles, then the original angle
is a straight angle.

A. False B. True C. True

Step-by-step explanation:

I am not so certain about A but B an C are correct

answer: -8.2562234e+13

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.