Triangles and Their Side Lengths

Question 1

Which properties belong to all isosceles triangles? Check all that apply.The base angles are congruent.All three angles are congruent.The two sides opposite the base angles are congruent.All three sides are congruent.The bisector of the vertex angle is the perpendicular bisector of the base.

Revolt · Accepted Answer

A: The base angles are congruent.; C: The two sides opposite the base angles are congruent.; E: The bisector of the vertex angle is the perpendicular bisector of the base.

Question 2

What is the value of x?

Revolt · Accepted Answer

B: 70

Question 3

Which fact helps you prove the isosceles triangle theorem, which states that the base angles of any isosceles triangle have equal measure?

Revolt · Accepted Answer

D: If one angle of a triangle is larger than another angle, then the side opposite the larger angle is longer than the side opposite the smaller angle.

Question 4

CD bisects ∠ACB. Which statements must be true? Check all that apply.

Revolt · Accepted Answer

A: AD = BD; C: m∠ACD = m∠BCD; D: m∠CDA = m∠CDB

Question 5

Question 5

Revolt · Accepted Answer

111296

Question 6

The vertex angle of an isosceles triangle measures 42°. A base angle in the triangle has a measure given by (2x + 3)°. What is the value of x? What is the measure of each base angle? x = Each base angle measures °.

Revolt · Accepted Answer

Part 1: 33; Part 2: 69

Question 7

Question 7

Revolt · Accepted Answer

A: 29 degrees

Question 8

Triangle WXY is isosceles. ∠YWX and ∠YXW are the base angles. YZ bisects ∠WYX.m∠XYZ = (15x)°. m∠YXZ = (2x + 5)°. What is the measure of ∠WYX?

Revolt · Accepted Answer

D: 150°

Question 9

Question 9

Revolt · Accepted Answer

PENDING

Question 10

Question 10

Revolt · Accepted Answer

69

Triangles and Their Side Lengths Answers

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Triangles and Their Side Lengths Answers

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