Missing angle
Congruence Theorems
Congruence Statements
True/False
Types of Triangles
100
Does m<b = 51 degrees?
Yes! 77+52+51 = 180
100
What is the congruency theorem where all three sides are congruent to another triangle?
SSS
100
2 of the congruency statements are provided for you. What is the 3rd?
1. m<B is congruent to m<D
2. m<A is congruent to m<E
side AC is congruent to side EF
100
TRUE OR FALSE
Triangles can have more than 180 degrees if they feel like it
FALSE
TRIANGLES DON'T HAVE FEELINGS
100
What type of triangle has an angle that is greater than 90 degrees?
Obtuse triangle
200
What is the measurement of the missing angle?
60 degrees. It is an equilateral triangle so all angles have to be the same.
200
Which congruency theorem is shown below?
ASA
200
Complete this statement: side BA is congruent to __________. 
side DE
200
TRUE OR FALSE
Triangles are labelled with lowercase letters
FALSE
Uppercase letters only!!!
200
What is the definition of an acute triangle?
All angles have to be less than 90 degrees.
300
What is the measure of <b?
45 degrees
300
Which of the 5 congruence theorems is shown below?
SAS
300
What are the 2 congruency statements needed to prove that these two triangles are congruent. You need to have both statements to earn the points.
Side CB is congruent to side ML
Side AB is congruent to side KL
300
TRUE OR FALSE
Angle Angle Side is a proven and valid congruency theorem.
TRUE
300
If a triangle has angles that are 90 degrees, 47 degrees and 43 degrees, what type of triangle is it?
A right triangle
400
If a triangle has two angles labeled, <1 as 53 degrees and <2 as 39 degrees, what does <3 have to be?
180-53-39 = 88 degrees
400
This question has two parts.
1. What triangle congruency theorem is shown?
2. What is one congruency statements that prove this?
1. AAS
2. m<B is cong. to m<E or m<C is cong. to m<F or side AC is cong. to side DF
400
What are the 3 congruency statements needed to prove that these 2 triangles are the same? You need all 3 to earn the points.
m<B = m<E
m<C = m<F
side CA = side FD
400
TRUE OR FALSE
An equilateral triangle is also an acute triangle
TRUE
400
What is the side of a right triangle called that is directly across from the right angle?
The hypotenuse
500
Can a triangle have the following angle measurements? Why or why not?
m<1 = 78
m<2 = 32
m<3 = 100
No, because the angles add up to more than 180 degrees.
500
Name all 5 triangle congruency statements
SSS, SAS, ASA, AAS, HL
500
These two triangles are congruent. Name the two triangles (yes, order matters!)
triangle CAB is cong. to triangle FDE
triangle ABC is cong. to triangle DEF
triangle BCA is cong. to triangle EFD
500
TRUE OR FALSE
A right triangle has 2 legs
TRUE
500
This question has 2 parts. You must get both parts correct to get the points.
1. What is the m<b?
2. What type of triangle is this?
90 degrees, a right triangle