38. The sum of the measures of ∠A and ∠B is 90°. The sum of the measures of ∠A and ∠C is 180°. The sum of the measures of ∠B and ∠D is 180°. What is the sum of the measures of ∠C and ∠D ?
Your Answer is
Correct Answer is J
Explanation
C+D=(A+C)+(B+D)-(A+B)=180+180-90=270