Which of these is a correct step in constructing congruent angles? A. Use a straightedge and draw an arc across the first arc from a leg of the given angle
B Use a straightedge to measure the width between the points where the arc cuts both legs of the given angle
C Use a compass and draw an arc across both the legs of the given angle
D Use a compass and join points to make the new leg of the congruent angle

i think is g(1)=-1.

hope that i can

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.