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Identify which of the labeled angles in the figure are acute. answers: A) ∠1 and ∠3 B) ∠3 and ∠4 C) ∠2 and ∠3 D) ∠1 and ∠2

Identify which of the labeled angles in the figure are acute answers A 1 and 3 B 3 and 4 C 2 and 3 D 1 and 2 class=

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Answer:

A

Step-by-step explanation:Angles 1 and 3 are acute because they are less than 90 degrees.  Angle 2 is 90 degrees (given) and angle 4 is over 90 degrees (obtuse)

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LukeTonon

Answer:

A) ∠1 and ∠3

Step-by-step explanation:

m∠2 = 90°

180° - 90° = 90°

∠1 and ∠3 are roughly the same size, which means their values must be close

90° + m∠1 + m∠3 < 180°,

Therefore ∠1 and ∠3 are acute, since they must be less than 90°.

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