This is about understanding vertical angles theorem.
Option B is Correct
- Vertical angles theorem is an angle theorem that states that when two lines intersect each other, the two opposite vertical angles formed will always be congruent i.e equal to each other.
- Looking at the image, we can see that the two lines that intersect each other are Line AD and Line BC.
The two opposite angles they form are; ∠AMB and ∠DMC.
- Now, from the vertical angles theorem quoted above, we can say that;
∠AMB is congruent to ∠DMC.
The congruency symbol is ≅.
Thus; ∠AMB ≅ ∠DMC.
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