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Answered

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If m∠3 = 110°, find m∠2:

A. 70°
B. 90°
C. 110°
D. 120°

If M3 110 Find M2 A 70 B 90 C 110 D 120 class=

Sagot :

MrLinty
A. 70°

Supplementary angles always = 180°

Where 180 - 110 = 70

110+ 70 = 180

Answer:

Option A, 70°

Step-by-step explanation:

If seen closely, ∠2 and ∠3 fall on the same segment, and that segment is a straight angle, this means ∠2 and ∠3 are supplementary angles (both add up to 180° or a straight angle). So we can say:

∠2 + ∠3 = 180

Then replace m∠3 with 110, as given:

∠2 + 110 = 180

Subtract 110 from both sides of "="

⇒ ∠2 = 70°

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