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Verdich [7]
3 years ago
12

Need help on this please help

Mathematics
2 answers:
kobusy [5.1K]3 years ago
8 0

Answer:

The measure of ∠A is 127°.

Step-by-step explanation:

The interior angles of a triangle always add up to 180°. Since you can fix <em>three</em> triangles into a pentagon, the sum of its interior of angles is 540° You could also look at how many angles there are (5), multiply that number by 180°, then subtract 360° from the product.

540° - (113° + 80° + 130° + 90°) = ∠A

540° - 413° = 127°

∠A = 127°

<em>Hope this helps,</em>

<em>~ Nicki ~</em>

xxMikexx [17]3 years ago
7 0

Answer:

127

Step-by-step explanation:

The sum of interior angles in this rectangle is = 540

three angles are given and one of the angle is a right angle so it's 90 degrees

80 + 130 + 90 + <A + 113 = 540 add like terms

413 + <A = 540 subtract 413 from both sides

<A = 127

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