Isosceles Triangles

What is the sum of the angles in an isosceles triangle?

• 90 degrees

• 180 degrees

• 120 degrees

• 150 degrees

If the base angles of an isosceles triangle are both 40 degrees, what is the measure of the vertex angle?

• 60

• 100

• 80

• 120

In an isosceles triangle, if one of the base angles is 60 degrees, what is the measure of the other base angle?

• 60 degrees

• 90 degrees

• 45 degrees

• 30 degrees

If the vertex angle of an isosceles triangle is 100 degrees, what is the measure of each base angle?

• 60

• 40

• 50

• 70

What is the measure of each base angle in an isosceles triangle if the vertex angle is 75 degrees?

• 60 degrees

• 70 degrees

• 52.5 degrees

• 45 degrees

If the sum of the base angles in an isosceles triangle is 120 degrees, what is the measure of each base angle?

• 45

• 90

• 30

• 60

In an isosceles triangle, if one of the base angles is 45 degrees, what is the measure of the vertex angle?

• 75

• 90

• 45

• 60

If the vertex angle of an isosceles triangle is 80 degrees, what is the measure of each base angle?

• 50

• 60

• 40

• 70

What is the measure of each base angle in an isosceles triangle if the vertex angle is 110 degrees?

• 45 degrees

• 60 degrees

• 90 degrees

• 35 degrees

If the sum of the base angles in an isosceles triangle is 150 degrees, what is the measure of each base angle?