Mathematics
Grade 10
45 min
Triangle Angle-Sum Theorem
Tutorial Preview
1
Find the missing angle in a triangle.
2
Find the base angles of an isosceles triangle.
3
Find the value of x using triangle angles.
Sample Practice Questions
Easy
A triangle has two angles measuring 60° and 60°. What is the measure of the third angle?
0.30°
1.60°
2.90°
3.120°
Easy
A right triangle has one angle of 30°. What is the measure of the third angle?
0.30°
1.60°
2.90°
3.150°
Easy
An isosceles triangle has a top angle of 100°. What is the measure of each base angle?
0.40°
1.50°
2.80°
3.100°
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