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Two angle measures in a triangle are 42° and 39°. What type of triangle is it? A. acute B. obtuse C. right D. isosceles
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Two angle measures in a triangle are 42° and 39°. What type of triangle is it?

A. acute

B. obtuse

C. right

D. isosceles

User Chhaya
by
7.9k points

2 Answers

6 votes
180 -(42+39)=180-81=99 (3d angle is more than 90, it is 99, obtuse angle),
if triangle has one obtuse angle , then it is B. obtuse
User Karnyj
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8.4k points
5 votes
?? Scalene triangle because none of the angles are the same
User Naincy
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7.2k points
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