Math unit 3 vocabulary

Question 1

Parallel lines

Answer 1

Coplanar and don’t intersect.

Question 2

Perpendicular lines

Answer 2

Intersect at 90 degree angles.

Question 3

Skew lines

Answer 3

Not coplanar, not parallel, don’t intersect

Question 4

Parallel planes

Answer 4

Planes that don’t intersect.

Question 5

Transversal

Answer 5

A line that intersects two coplanar lines at two different points. The transversal t and the other two lines r and s form eight angles.

Question 6

Corresponding angles

Answer 6

Lie on the same side of the transversal t, on the same sides of lines r and s.

Question 7

Alternate interior angles

Answer 7

Nonadjacent angles, that lie on opposite sides of the transversal t, between lines r and s.

Question 8

Alternate exterior angles

Answer 8

Lie on opposite sides of the transversal t, outside lines r and s.

Question 9

Same-side interior angles/Consecutive interior angles

Answer 9

Lie on the same side of the transversal t, between lines r and s.

Question 10

Rise

Answer 10

The difference in the y-values of two points on a line.

Question 11

Run

Answer 11

The difference in the x-values of two points on a line.

Question 12

Slope

Answer 12

The ratio of rise to run.

Question 13

Point-slope form

Answer 13

y-y1 = m(x-x1), where m is the slope and (x1, y1) is a given point on the line.

Question 14

Slope-intercept form

Answer 14

y=mx+b, where m is the slope and b is the y-intercept