Interior Angles
Exterior Angles
Classify Triangles
Congruent Triangles
Triangle Inequality
100
what does every triangle add up to?
180
100
How do you find the measure of an exterior angle of a triangle?
Adding together the two interior angles not connected to the exterior angle OR subtracting the interior angle connected to the exterior angle from 180.
100
What type of triangle has three equal side lengths?
Equilateral
100
What are the 5 ways to prove triangles are congruent?
SSS
SAS
ASA
AAS
HL
100
What is the triangle inequality theorem?
Any two sides added together must be MORE than the third side.
200
In triangle ABC, angle A measures 28 degrees and angle B measures 92 degrees. Find the measure of angle C. ______________
60
200
find x
109
200
What type of triangle has no congruent side lengths?
Scalene
200
how can you prove the triangles are congruent
HL
200
Can the following side lengths form a triangle?
5, 8, 3
no
5+3 = 8
300
In triangle HAT, angle H measures 47 degrees and angle A measures 14 degrees. Find the measure of angle T. ______________
119
300
110
300
What type of triangle has two equal side lengths and 1 angle that is greater than 90 degrees?
Obtuse Isosceles
300
Can you prove the triangles are congruent? explain
No, SSA is not a way to prove triangles are congruent.
300
Can the following side lengths form a triangle?
10, 17, 9
yes
400
In triangle BUG, angle B measures 50 degrees, angle U measures 80 and angle G measures 2x+4. what is the measure of x?
23
400
what is the value if y
10
400
What type of triangle has all angles being less than 90 degrees and two sides that are congruent lengths?
Acute Isosceles
400
how do you know the two triangles are congruent?
SAS
400
what is the range of possible third side lengths for a triangle with side lengths of 8 and 13?
5 < x < 21
500
Triangle STU is an isosceles triangle. Angles S & T are the base angles of the triangle. If angle T measure 52 degrees. What is the measure of angle U?
76
500
find the measure of angle A
78
500
What type of triangle has three angles that measure 60 degrees?
*Classify by sides*
Equilateral
500
Are the triangles congruent? How do you know?
Yes, AAS
500
What is the range of possible third side lengths for a triangle with side lengths of 14 and 18
4 < x < 32