Marking Congruent Triangles

Front

VERTICAL ANGLES

are congruent

Back

When 2 lines intersect, the angles opposite one another, sharing a vertex, are vertical angles.

Front

Bowtie

WITHOUT

Parallel Lines

Back

Vertical Angles ONLY

Front

ALTERNATE INTERIOR ANGLES

are congruent

Back

When parallel lines are present, the angles on OPPOSITE sides of the transversal, IN BETWEEN the parallel lines are Alternate Interior Angles.

(Hint: look for the "Z")

Front

Bowtie

WITH

Parallel Lines

Back

Vertical Angles

AND

Alternate Interior Angles

Front

REFLEXIVE PROPERTY

an angle, side or shape

is congruent to itself

Back

If a side is shared in it's entirety with two triangles, you can say that side is congruent to itself.

Front

REFLEXIVE PROPERTY

an angle, side or shape

is congruent to itself

Back

If a side is shared in it's entirety with two triangles, you can say that side is congruent to itself.

Front

REFLEXIVE PROPERTY

an angle, side or shape

is congruent to itself

Back

If a side is shared in it's entirety with two triangles, you can say that side is congruent to itself.

Front

Shared Side

WITH

parallel lines present

Back

Reflexive Property

AND

Alternate Interior Angles

Front

CORRESPONDING ANGLES

are congruent

Back

When parallel lines are present, the angles in the same relative position to each parallel line are Corresponding Angles.

(Hint: look for the "F")

Front

Mountain Range with

NO

Parallel Lines

Back

Nothing new to mark