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Triangle Sum Theorem
Triangle Exterior Angles Theorem
More Angles
100
This triangle has a right angle.
What is a right tringle?
100

A triangle with 3 congruent sides is...

What is equilateral?

100
The sum of the interior angles of a triangle.
What is 180 degrees
100

If the sum of the measures of the two remote interior angles of a triangle is 60 degrees, what is the measure of the exterior angle?

60 degrees

100

The measure of the two remote interior angles is __________ to the measure of the exterior angle. 

Equal
200
This triangle has 3 acute angles.
What is an acute triangle?
200
A triangle with exactly 2 congruent sides is...
What is an isosceles triangle?
200
Given triangle ABC, angle B is 65 degrees, angle C is 70, and angle A is...
What is 45 degrees?
200

Angle a and angle b are the two remote interior angles of a triangle and angle c is the exterior angle. 

m<a=50 degrees

m<c=75 degrees

What is the measure of angle b?

25 degrees

200
Two angles that add to 180 degrees.
What is supplementary angles?
300
This triangle has an obtuse angle.
What is an obtuse angle?
300
A triangle with no congruent sides is...
What is a scalene traingle?
300

The base angles of an isoscelese triangle are...

What is congruent?

300

Angle a and angle b are the two remote interior angles of a triangle and angle c is the exterior angle. 

m<a=2x degrees

m<b=10 degrees

m<c=30 degrees

What is the value of x?

x=10

300
Two angles that add up to 90 degrees.
What is complementary angles?
400
The base angles of this triangle are congrent.
What is an isosceles triangle?
400
The pythagorean theorem applies to the sides of this triangle.
What is a right triangle?
400

Given triangle STU with angle S = 2x, angle T = 5x, and angle U = 3x, solve for x.

18

400

If the two remote interior angles of a triangle are congruent, and the exterior angle has a measure of 100 degrees, what is the measure of one remote interior angle?

50 degrees

400
Vertical angles are...
What is congruent?
500
All 3 angles of this triangle are congruent.
What is an equiangular triangle?
500
Given triangle GHT is an isosceles triangle with congruent sides 17 and 3x + 2, x is...
What is 5?
500

If the sum of the interior angles of a triangle is x+50, what is x?

130 

500

If the two remote interior angles of a triangle are congruent, and the exterior angle has a measure of 60 degrees, what is the sum of the interior angles of the triangle?

180 degrees

500
Two angles that form a straight angle...
What is a linear pair?