Equilateral and Isosceles Triangles Practice

• QR = 4

• QR = 20

• QR = 11

• QR = 5

Find x, then the measure of JK

• x=10, JK=50

• x=10, JK=100

• x=15, JK=100

• x=15, JK=50

Find x, then the measure of AD

• x=5, AD=19

• x=5, AD=38

• x=1, AD=19

• x=1, AD=38

• The segment is not parallel to any other segment in the diagram.  

What is the value of x?

• 17

• 34

• 68

• Impossible to determine from the information given.

If an isosceles triangle has a base angle measuring 40°, then what measure is the VERTEX angle?

• 120°

• 100°

• 40°

• 80°

What is the measure of ∠T?

• 45

• 30

• 60

• 180

What is the length of side JK?

• 12

• 30

• 33

• 3

What is the \(m\angle U\) ?

Identify the base angles.