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
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Unit D: Congruent Triangles REVIEW
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