Types of Triangles
Angle Sum Properties
Congruence
Congruence Examples
Mixed Review
100
A triangle whose angles measure 30, 60, and 90 degrees.
What is a right triangle?
100

These have a combined sum of 180 degrees

What are the interior angles of a triangle?

100
The five triangle congruence theorems/postulates.
What is SSS, SAS, ASA, AAS and HL?
100

Triangles ABC and DEF have two congruent corresponding angles which include one congruent corresponding side.

What is an example of congruence by ASA?

100

Two or more lines with the same slope.

What are parallel lines?

200
A triangle whose side lengths measure 2 cm, 2 cm, 2cm.
What is an equilateral triangle?
200

Equal to the sum of the two remote interior angles.

What is the measure of an exterior angle?

200
A theorem that does NOT always prove triangles congruent.
What is SSA or AAA?
200

Triangles ABC and DEF have two congruent pairs corresponding angles and one congruent pair of corresponding sides EXTERIOR to these angles. 

What is an example of CONGRUENT TRIANGLES by AAS?
200

Lines whose slopes are opposite reciprocals of one another.

What are perpendicular lines?

300
A triangle whose angles measure 20, 140 and 20 degrees.
What is an obtuse triangle or what is an isosceles triangle?
300
The value of x if the measures of the interior angles of a triangle are 90 degrees, (4x - 5) degrees, and (3x + 11) degrees.
What is 12?
300

CPCTC

What is the acronym for Corresponding Parts of Congruent Triangles are Congruent?

300

Triangles MNO and PQR have three pairs of congruent corresponding sides.

What is an example of CONGRUENT TRIANGLES by SSS.

300

(Pi)(Radius)2

What is the formula for the area of a circle?

400
A triangle whose angles measure 60, 60, and 60 degrees.
What is an equiangular triangle?
400
The measure of the exterior angle, (5x - 10) degrees, when the two nonadjacent interior angles measure 40 degrees and 3x degrees.
What is 115 degrees?
400

A pair of corresponding side lengths that are congruent if ∆CAT≅∆HAT.

What are CA and HA?; CT and HT?; or AT and AT (Shared side)?

400

Triangles LMN and QRS have two pairs of congruent corresponding sides with an included pair of congruent corresponding angles.

What is an example of a CONGRUENT TRIANGLE by SAS?

400

2(Pi)(Radius)

What is the formula for the circumference of a circle?

500
A triangle that never has any equal side lengths.
What is a scalene triangle?
500
The supplement of the exterior angle, (6x - 7) degrees, when the nonadjacent interior angles are 2x degrees and (103 - x) degrees.
What is 55 degrees?
500

A pair of corresponding angle measures that are congruent if ∆CAT≅∆HAT.

What are angles CAT and HAT? ; ATC and ATH? ; or ACT and AHT?

500

Right Triangles STU and XYZ have congruent hypotenuses and a pair of congruent corresponding legs.

What is an example of CONGRUENT TRIANGLES by HL?

500

The value of x if a pair of vertical angles measure (3x+3) degrees and (5x-27) degrees.

What is 15?

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