2. Which of these describes a unique polygon?
A. A triangle with angles 30°, 50', and 100°
B. A quadrilateral with each side length 5 cm
C. A triangle with side lengths 6 cm, 7 cm, and 8 cm
D. A triangle with side lengths 4 cm and 5 cm and a 50° angle

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.

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed

ur right ive taken the test

step-by-step explanation: