Angles and parallel lines

How do you find the measure of an angle when given its supplementary angle?

• Add the measure of the known angle to 90 degrees.

• Subtract the measure of the known angle from 180 degrees.

• Multiply the measure of the known angle by 2.

• Divide the measure of the known angle by 2.

What are corresponding angles?

• Pairs of angles that are equal in measure and located on the same side of a transversal.

• Pairs of angles that are in the same position on two parallel lines cut by a transversal and are equal in measure.

• Angles that are supplementary to each other when two parallel lines are cut by a transversal.

• Angles that are adjacent to each other when two lines intersect.

What are alternate interior angles?

• Pairs of angles that are on the same side of the transversal and outside the two parallel lines.

• Pairs of angles that are on opposite sides of the transversal and inside the two parallel lines. They are equal in measure.

• Pairs of angles that are on the same side of the transversal and inside the two parallel lines.

• Pairs of angles that are on opposite sides of the transversal and outside the two parallel lines.

What is the relationship between angle 6 and angle 8 if they are alternate exterior angles?

• Angle 6 is greater than angle 8.

• Angle 6 is less than angle 8.

• Angle 6 is equal to angle 8.

• Angle 6 and angle 8 are complementary.

What is a transversal?

• A line that intersects two or more lines at different points.

• A type of angle formed by two intersecting lines.

• A line that runs parallel to another line.

• A line that connects the midpoints of two sides of a triangle.

What are consecutive interior angles?

• Pairs of angles on opposite sides of the transversal and inside the two parallel lines.

• Pairs of angles that are on the same side of the transversal and inside the two parallel lines, which are complementary.

• Pairs of angles that are on the same side of the transversal and inside the two parallel lines, which are supplementary.

• Pairs of angles that are outside the two parallel lines and on opposite sides of the transversal.

If angle C is 116 degrees, what is the measure of its supplementary angle?

• 64 degrees

• 54 degrees

• 74 degrees

• 80 degrees

If angle 3 is 70 degrees, what is the measure of angle 8 if they are alternate interior angles?

• 50 degrees

• 70 degrees

• 90 degrees

• 110 degrees

If two parallel lines are cut by a transversal, what can be said about the angles formed?

• Corresponding angles are equal, alternate interior angles are equal, and consecutive interior angles are supplementary.

• All angles formed are equal to 90 degrees.

• The angles formed are all acute angles.

• The angles formed have no specific relationships.

What is the definition of parallel lines?

• Lines that intersect at a right angle.

• Lines that meet at a point.

• Lines in a plane that never meet and are always the same distance apart.

• Lines that curve away from each other.