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One angle measure in an obtuse isosceles triangle is 40°. What is the measure of one of the other angles? 70° 100° 120° 140°
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One angle measure in an obtuse isosceles triangle is 40°. What is the measure of one of the other angles? 70° 100° 120° 140°

User Kristof
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2 Answers

5 votes

Answer:

100

Explanation:

User Daninthemix
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4 votes
Since it is isosceles, we know that the other base angle is also 40°
Three interior angles of every triangle totals 180°
x° + 80° = 180°

x° = 100°
User Anaxin
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