All The diagonal of "ABCD intersect ato. If 4COD=78 them (OAB 4:
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Answer:
Step-by-step explanation:
Answer: 51°
Step-by-step explanation:
angle AOB = angle DOC
In ∆ OAB
angle O + angle A + angle B = 180
78 + x + x = 180
78 + 2x = 180
2x = 180 - 78
2x = 102
x = 102/2
x = 51
angle OAB = 51
Answered by
0
your answer is 51 degree hope it's helpful to you
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