Angle Measurement

Alternate interior angles are on the ________ of the parallel lines but on opposite sides of the transversal.

• Outside

• Inside

• Opposite

• Vertex

Given the following two parallel lines that have been cut by a transversal. Choose all the options that represent corresponding angles.

Which pair of angles must be supplementary so that r is parallel to s?

• ∠2 and ∠3

• ∠5 and ∠6

• ∠4 and ∠10

• ∠6 and ∠14

Which of the following is true about an obtuse triangle?

• All angles are less than 90 degrees.

• One angle is more than 90 degrees.

• It has a 90-degree angle.

• All angles are 60 degrees.

Answer explanation

An obtuse triangle has one angle greater than 90 degrees, making the statement 'One angle is more than 90 degrees' true.

What value of x proves that line p is parallel to line r?

• 14

• 12.5

• 15

• 25

Given the following two parallel lines cut by a transversal. Which pair of angles represents alternate exterior angles?

Which angle is a vertical angle to with \angle7 ?

• x = 118
• x = 108
• x = 28
• x = 58

and are __.

• Alternate Interior Angles

• Alternate Exterior Angles

• Same-side Interior Angles

• Corresponding Angles

• None of these