Solving for Unknown Angles in Triangles

Question 1

Triangle ABC is a right triangle.Which equations can be used to find the value of x? Check all that apply.

Revolt · Accepted Answer

x + 90 + (x minus 10) = 180; 2 x + 80 = 180; x + 90 = 2 x + 40

Question 2

Lines l and m are parallel. When they are cut by the two transversals below, a triangle is formed.What is

Revolt · Accepted Answer

34 degrees

Question 3

In , what is the measure of angle B?

Revolt · Accepted Answer

92 degrees

Question 4

In , what is the measure of ?

Revolt · Accepted Answer

68 degrees

Question 5

Lines a and b are parallel. What is the value of x?

Revolt · Accepted Answer

16

Question 6

Lines l and m are parallel.What is the measure of angle 3?

Revolt · Accepted Answer

25 degrees

Question 7

Lines m and n are parallel.What is ?

Revolt · Accepted Answer

55 degrees

Question 8

Lines q and r are parallel. What is the value of x?

Revolt · Accepted Answer

14

Question 9

Madison drew . In her triangle, is represented as . The measure of is half the measure of . The measure of is less than twice . What is ?

Revolt · Accepted Answer

102 degrees

Question 10

Triangle GHJ has the exterior angles shown below.For , what is the value of x?

Revolt · Accepted Answer

12

Solving for Unknown Angles in Triangles Answers