SAT Math Multiple Choice Practice Question 484: Answer and Explanation
In the figure above, line p is parallel to line q. What is the value of a ?
Correct Answer: B
B Fill in the angles of the small triangle. The lower left angle is 70° and the lower right angle is 80°. Because the angles in a triangle must add up to 180°, a = 180 – 70 – 80 = 30.