1. 
The base angle of an isosceles triangle is 57. What is the measure of the vertex angle?


2. 
The vertex angle of an isosceles triangle is 34. What is the measure of the base angle?


3. 
The degree measure of the vertex angle is (4 + 12x). The degree measure for each base angle is (53 + x). What is the value of vertex angle?


4. 
The ratio of the measure of a base angle in an isoceles triangle to the measure of the vertex angle is 14:8. Find the measure of each angle.


5. 
The degree measure of the vertex angle is (7x  9). The degree measure for each base angle is (2x + 56). What is the value of base angle?


6. 
The degree measure of the vertex angle is (6x  38). The degree measure for each base angle is (4x  38). What is the value of x?


7. 
The measure of the exterior angle at the base an isosceles triangle is 143. What is the measure of the vertex angle?


8. 
The degree measure of the vertex angle is (x + 96). The degree measure for each base angle is (33 + x). What is the value of the measure of an exterior angle at the base of the triangle?


9. 
The degree measure of the vertex angle is (17x  2). The degree measure for each base angle is (8x  8). What is the value of the measure of an exterior angle at the base of the triangle?


10. 
The ratio of the measure of a base angle in an isoceles triangle to the measure of the vertex angle is 1:3. Find the measure of each angle.

