Types of Triangles
Angle Sum Properties
Congruence
Are the triangles congruent?
Mixed Review

100

A triangle whose angles measure 30, 60, and 90 degrees.
What is a right triangle?

100

180 degrees
What is the sum of the interior angles of a triangle?

100

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

100

Determine if the triangles are congruent. If they are, state the theorem that justifies the congruence and complete the congruence statement. #8 p.34

100

Lines whose slopes are opposite reciprocals.
What are perpendicular lines?

200

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

200

The sum of the two nonadjacent 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

Determine if the triangles are congruent. If they are, state the theorem that justifies the congruence and complete the congruence statement. #10 p.48

200

The value of x if a pair of vertical angles measures 5x degrees and 2(x +42) degrees.
What is 28?

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 acrynom for Corresponding Parts of Congruent Triangles are Always Congruent.

300

Determine if the triangles are congruent. If they are, state the theorem that justifies the congruence and complete the congruence statement. #11 p.50

300

A statement that switches the hypothesis and conclusion of a conditional statement.
What is a converse?

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.

400

Determine if the triangles are congruent. If they are, state the theorem that justifies the congruence and complete the congruence statement. #19 p.64

400

Find the values of x and y. #1 p.94

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

Complete the statements given ∆ALX≅∆GIW. (p.25)

500

Prove that ∆KLN≅∆MNL. #5 p.67

500

Find the perimeter of the triangle. #11 p.94