Lines and Angles
Perpendicular Lines
Parallel Lines and Proving Lines are Parallel
Properties of Parallel Lines
Equations of Lines:
Parallel and Perpendicular
100

A ________________________ is a line that cuts two or more coplanar lines at different points.

What is transversal?

100

The symbol for perpendicular lines.

What is upside down capital T?  

100

The symbol for parallel.

What is the double l, (ll)?

100
Two lines that are perpendicular to the same line will be:

What is parallel?

100
The equation for slope-intercept.

What is y=mx+b?

200

The number of corresponding angle pairs that are formed when a transversal cuts through two lines.

What is 4?

200

If two lines are perpendicular, then there will be ______ 90 degree angles

What is 4?

200

These can be added on lines to indicate that the lines are parallel.

What are arrows?  

200

If a line is parallel to a given line, and another line is parallel to the same given line, then all three lines are going to be:

What is parallel?  

200

Two lines that are parallel will have this in common.

What is the same slope?

300

The type of lines that are not coplanar, and never intersect.  

What is skew?  

300

Two lines that intersect to form a linear pair of congruent angles are going to be:

What is perpendicular?

300

When two parallel lines are cut by a transversal, then the alternate exterior angles will be:

What is congruent?  

300
True or False:  If one pair of vertical angles are 90 degrees, then the other pair of vertical angle at that intersection will be 90 degrees.

What is true?  

300

The slopes of perpendicular lines will be:

What is opposite (or negative) reciprocals?  

400
Angles that are on opposite sides of the transversal and contained outside the two lines being intersected are called:

What is alternate exterior angles?  

400

When a 90 degree angle is intersected by another line, then the two angles that are formed will be:

What is complementary?  

400
When two lines are cut by a transversal, and the same-side interior angles are supplementary, then you can conclude:

What is that the lines are parallel?  

400

When two lines are parallel, and the transversal is perpendicular to those lines, then each angle will be

What is 90 degrees?  

400

When multiplying the slopes of perpendicular lines, one will always and forever get:

What is -1?

500

The synonym for same-side interior angles.  

What is consecutive interior angles?  

500

The sum of all the angles that are formed when two lines are perpendicular to each other.

What is 360 degrees?  

500

If one of the alternate interior angles is 50 degrees, then the other one would have to be _______ degrees for the two lines to be parallel.

What is 50?  

500

When two parallel lines have a perpendicular transversal, then the same-side interior angles will always be

What is supplementary?  
500

In the following equation, identify the slope of a line parallel to the given line, and the slope of the line that is perpendicular to the given line:

y =4x +3

What is slope of 4 for parallel, and -1/4 for perpendicular?  

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