Chs Geometry Unit 3

Front 1

Two lines that intersect at right angles

Back 1

Perpendicular Lines - Word Defn

Front 2

A line that intersects two or more lines at different points

Back 2

Transversal - Word Defn

Front 3

Non-coplanar lines that are not parallel

Back 3

Skew lines - Word Defn

Front 4

Coplanar lines that never intersect

Back 4

Parallel lines - Word Defn

Front 5

A line that intersects 2 or more lines at distinct points

Back 5

Transversal - Word Defn

Front 6

Two angles that lie outside the 2 lines and are on the same side of the transversal

Back 6

Same Side Exterior Angles - Word Defn

Front 7

If 2 lines are cut by a transversal AND corresponding angles are congruent, then lines are parallel.

Back 7

Corresponding Angles Postulate CONVERSE

Front 8

Angle 1 and Angle 4

Back 8

Picture of Vertical Angles

Front 9

Angle 1 and Angle 5

Back 9

Picture of Corresponding Angles

Front 10

Angle 1 and Angle 7

Back 10

Picture of Same-Side (Consecutive) Angles

Front 11

Angle 1 and Angle 8

Back 11

Picture of Alternate Exterior Angles

Front 12

Angle 3 and Angle 5

Back 12

Picture of Same-Side (Consecutive) INTERIOR Angles

Front 13

Angle 3 and Angle 6

Back 13

Picture of Alternate Interior Angles

Front 14

Angle 1 and Angle 2

Back 14

Picture of a Linear Pair

Front 15

Original Statement: If p, then q. (p=>q)

New: If q, then p. (q => p)

Back 15

Converse

Front 16

Original Statement: If p, then q. (p=>q)

New: If not q, then not p. (~q => ~p)

Back 16

Contrapositive

Front 17

If 2 lines are parallel are cut by a transversal, then the corresponding angles are congruent.

Back 17

Corresponding Angles Postulate

Front 18

Points on the same line

Back 18

Collinear Points

Front 19

Two angles whose sum is equal to 90 degrees are called _______________________

Back 19

Complementary Angles

Front 20

Two angles whose sum equals 180 degrees are called ________________

Back 20

Supplementary Angles

Front 21

Two adjacent angles that have non-common sides that form a line would be a ________________________ of angles.

Back 21

Linear Pair

Front 22

If <C & <D are a linear pair, then <C & <D are supplementary.

Back 22

Linear Pair Postulate

Front 23

If <C & < D are supplementary,

then m<C + m<D = 180 degrees.

Back 23

Definition of Supplementary Angles

Front 24

If <A is congruent to <B, then m<A = m<B.

(the measures are equal)

Back 24

Definition of Congruent Angles