Question

The diagonals of the rectangle ABCD intersect at O. If ∠COD = 78°, then ∠DOA is​

Answer 1

Step-by-step explanation:

102

they are linear pair

Answer 2

Answer:

answer is 51°

Step-by-step explanation:

angle O+angle A+angle B= 180°

78+x+x=180°

78+2x=180°

2x=180-78

2x=102

x=102/2

x=51°