Math Quiz: Types of Triangles

1. Which of the following sets of interior angle measures would describe an acute isosceles triangle?
90°, 45°, 45°
80°, 60°, 60°
60°, 60°, 60°
80°, 50°, 50°

2. Which of the following sets of interior angle measures would describe an obtuse isosceles triangle?
90°, 45°, 45°
90°, 90°, 90°
100°, 50°, 50°
120°, 30°, 30°

3. Which of the following angle measurements would not describe an interior angle of a right angle?
30°
60°
90°
100°

4. If triangle JNM is equilateral and equiangular, which condition would not exist?
m is a positive number.
mJN = mMN
JM equal JN
mangleN = mangleJ
mangleM = mNM

5. In isosceles triangle ABC, if vertex angle A is twice the measure of base angleB, then angleC measures
30°.
33°.
45°.
90°.

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