Rectangle A B C D has A B=6 and B C=3. Point M is chosen on side A B so that \angle A M D=\angle C M D. What is the degree measure of \angle A M D ?
Answer Choices
A. 15
B. 30
C. 45
D. 60
E. 75
Rectangle A B C D has A B=6 and B C=3. Point M is chosen on side A B so that \angle A M D=\angle C M D. What is the degree measure of \angle A M D ?
Answer Choices
A. 15
B. 30
C. 45
D. 60
E. 75