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The triangles in the diagram are congruent. If mF = 40°, mA = 80°, and mG = 60°, what is mB?
two triangles, abc and efg, are represented on a grid. sides ac and ge are marked congruent. sides ab and ef are marked congruent. angles a and e are marked congruent. angle b is labeled question mark.
a. 40
b. 60
c. 80
d. 100

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Answer:

the correct answer is option a) 40.

Step-by-step explanation:

In congruent triangles, corresponding angles are equal. So, if angle A is congruent to angle E, we can say that angle B is congruent to angle F.

Given that angle F is labeled as 40°, we can conclude that angle B is also 40°.

Therefore, the correct answer is option a) 40.

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