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