Triangle Sum Theorem
Exterior Angles Theorem
Congruence Statements
Triangle Shortcuts
Isosceles Triangles
100
What is the sum of all 3 interior angles in a triangle?
180o
100
c
100
Are the two triangles congruent?
Yes
100
SSS
100
True or False: This triangle is isosceles.
True
200
If a triangle has interior angle measures of 50o and 80o, what is the measure of the third angle?
50o
200
Solve for x.
x=69o
200
Are the two triangles congruent?
NO
200
ASA
200
True or False: This triangle isosceles.
False
300
What is the measure of the third angle?
71o
300
Solve for x
x=25
300
Suppose △ADG≅△BCE. What angle is congruent to ∠G?
∠E
300
AAS
300
If a triangle has side measures of 6, 4, and 6, is it considered isosceles?
Yes
400
Find the measurement of the third angle.
49
400
Solve for x
C
400
Suppose △INT≅△WEB. What angle is congruent to ∠W?
∠I
400
HL
400
Would a triangle with side measurements of 12, 24, and 18 be considered isosceles?
No
500
Solve for x.
x=-8
500
Solve for the exterior angle.
136o
500
Write a congruence statement for the two triangles below.
△RST≅△FED
500
SAS
500
Solve for x and identify if it is an isosceles triangle.
x=14, Isosceles triangle.