Geomtetry Unit 3 - Parallel and Perpendicular Lines

Question 1

Parallel Lines

Answer 1

Co-planar; do not intersect

Question 2

Skew Lines

Answer 2

Non-coplanar; do not intersect

Question 3

Parallel Planes

Answer 3

Do not intersect

Question 4

Transversal

Answer 4

Line that intersects with 2 or more lines

Question 5

Alternate Interior Angles

Answer 5

Non-adjacent angles that lie on opposite sides of the transversal.

Question 6

Same-side Interior Angles

Answer 6

On same side of transversal

Question 7

Corresponding Angles

Answer 7

Same side of transversal, same angle

Question 8

Alternate Exterior Angles

Answer 8

Non-adjacent angles on opposite sides

Question 9

Corresponding Angles Postulate

Answer 9

If therea re 2 parallel lines then ocoresponding angles are congruent

Question 10

Alternate Interior Angles Theorem

Answer 10

If a transversal intersects two parallel lines, then alternate interior angles are congruent

Question 11

Same-side Interior Angles Theorem

Answer 11

If a transversal intersects two parallel lines, then same side interior angles are supplementary

Question 12

Alternate Exterior Angles Theorem

Answer 12

If transversl intersects two parallel lines, then alternate exterior angles are congruent.

Question 13

Postulate: Converse of the Corresponding Angles Postulate

Answer 13

2 lines cut by transversal: corresponding angles, alternate interior angles, and alternate exterior angles are congruent; same side angles = 180; lines are parallel

Question 14

Theorem: Converse of the Alternate Interior Angles Theorem

Answer 14

If same side angles = 180 then lines are parallel

Question 15

Theorem: Converse of the Same-Side Interior Angles Theorem

Answer 15

If same side angles = 180 then liness are parallel

Question 16

Theorem: Converse of the Alternate Exterior Angles Theorem

Answer 16

If alterate exterior angles are congruent then lines are parallel

Question 17

Triangle Sum Theorem

Answer 17

M<A + M<B + M<C = 180

Question 18

Triangle Exterior Angle Theorem

Answer 18

Two interior angles are congruent to the exterior angle

Question 19

Slope-Intercept form

Answer 19

y=mx+b

Question 20

Slope

Answer 20

y1-y2/x1-x2

Question 21

Point-Slope

Answer 21

y-y1=m(x-x1)