Isosceles Triangles

Question 1

Triangle ABC is isosceles.

Revolt · Accepted Answer

D: It is equal to the measure of angle C.

Question 2

Consider the diagram and proof by contradiction.Given: △ABC with AB ≅ AC

Revolt · Accepted Answer

B: ∠B ≅ ∠C

Question 3

The vertex angle of an isosceles triangle measures 40°. What is the measure of a base angle?

Revolt · Accepted Answer

B: 70°

Question 4

Triangle ABC is isosceles.

Revolt · Accepted Answer

C: 40

Question 5

Triangle ABC is shown below.

Revolt · Accepted Answer

C: 14

Question 6

Triangle XYZ is isosceles. The measure of the vertex angle, Y, is twice the measure of a base angle.What is true about triangle XYZ? Select three options.Angle Y is a right angle.The measure of angle Z is 45°.The measure of angle X is 36°.The measure of the vertex angle is 72°.The perpendicular bisector of creates two smaller isosceles triangles.

Revolt · Accepted Answer

58198,58199,58202

Question 7

What is always true about the angles of an isosceles triangle?

Revolt · Accepted Answer

B: At least two of the angles are congruent.

Question 8

What is true about QRT? Select two options.

Revolt · Accepted Answer

A: QRT = 90°; B: QRT = SRT

Question 9

Isosceles triangle ABC has a perimeter of 96 centimeters. The base of the triangle is and measures 24 centimeters.What is the measure of ?

Revolt · Accepted Answer

B: 36 cm

Question 10

Triangle SQT is isosceles. The measure of angle STQ is 48°.

Revolt · Accepted Answer

A: 24°

Isosceles Triangles Answers

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