∠ ABC and ∠ ABD form a linear pair. If ∠ ABC = 30°, then ∠ ABD = ………………. .
A. 30°
B. 60°
C. 150°
D. 15°
Answer:C
∠ ABC and ∠ ABD form a linear pair. If ∠ ABC = 30°, then ∠ ABD = ………………. .
A. 30° B. 60° C. 150° D. 15°