Answer and Explanation
Your Answer is
Correct Answer is J
Explanation
It can be known from the title that r+s=v+t=180° -40°=140°, then r+s+t+v=140°×2=280°
28. In ΔADE below, B lies on AE; C lies on AD; and r, s, t, and v are angle measures, in degrees. The measure of ∠A is 40°. What is r + s + t + v ?
