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A quadrilateral has three angles that measure 80°, 110°, and 75°. Which is the measure of the fourth angle

A quadrilateral has three angles that measure 80°, 110°, and 75°. Which is the measure of the fourth angle
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1 vote
A quadrilateral has three angles that measure 80°, 110°, and 75°. Which is the measure of the fourth angle

User John Jiang
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1 Answer

2 votes
180(x - 1)

A quadrilateral has 4 sides, so 180(3) = 540

80 + 110 + 75 = 265

540 - 265 = 275

Last measurement is 275

hope this helps
User StevenWernerCS
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