How to find an angle in an acute / obtuse isosceles triangle

Practice Questions

High School Math › How to find an angle in an acute / obtuse isosceles triangle

Page 1 of 2
10 of 16
1

An isoceles triangle has a base angle that is twice the vertex angle. What is the sum of the base and vertex angles?

2

An isoceles triangle has a base angle that is degrees less than three times the vertex angle. What is the product of the vertex angle and the base angle?

3

The base angle of an isosceles triangle is thirteen more than three times the vertex angle. What is the difference between the vertex angle and the base angle?

4

An isoceles triangle has a vertex angle that is degrees more than twice the base angle. What is the vertex angle?

5

If an isosceles triangle has an angle measuring greater than 100 degrees, and another angle with a measuring degrees, which of the following is true?

6

Triangle FGH has equal lengths for FG and GH; what is the measure of ∠F, if ∠G measures 40 degrees?

7

In triangle ABC, Angle A = x degrees, Angle B = 2x degrees, and Angle C = 3x+30 degrees. How many degrees is Angle B?

8

An isosceles triangle has a base angle that is six more than three times the vertex angle. What is the base angle?

9

An isosceles triangle has a vertex angle that is twenty degrees more than twice the base angle. What is the sum of the vertex and base angles?

10

Points A and B lie on a circle centered at Z, where central angle <AZB measures 140°. What is the measure of angle <ZAB?

Page 1 of 2
Return to subject