Triangle Sum Theorem
Triangle Inequality Theorem
Supplementary and Complementary Angles
Angle Pair Relationships
Parallel Lines Cut by Transversals
100
The sum of the interior angles of any triangle is always this many degrees.
180o
100
The triangle inequality theorem says the sum of any two sides of a triangle must be _________ _____ the third side.
Greater than.
100
Two angles add up to 180o. What are these angles called?
Supplementary Angles
100
Two angles that share a common side and have the same vertex are ________ angles.
Adjacent
100
Name a pair of alternate interior angles.
3 and 6
or
4 and 5
200
If one angle in a triangle is 90o and another is 60o, what is the measure of the third angle?
30o
200
Do the below three lengths make a triangle?
9 cm, 5 cm, 13 cm
Yes
200
If one angle is 30o, what is the measure of its complement?
60o
200
Two angles that are opposite angles that are formed by two intersecting lines and have the same measure are _________ angles.
Vertical
200
Which of these makes a supplementary angle pair?
~alternate exterior
~alternate interior
~corresponding
~same side exterior
~same side interio
~vertical
~same side exterior
~same side interior
300
If a triangle has angles r, 70o, and 60o, what is the value of r?
50o
300
Do the below three lengths make a triangle?
10 cm, 16 cm, 5 cm
No
300
Angle P and angle Q are supplementary. If angle P is 124o, what is angle Q?
56o
300
Angle D and angle R are vertical angles. If angle D is 40o, what is the measure of angle R?
40o
300
The measure of angle 3 is 35. What is the measure of angle 8.
145
400
A triangle has angles measuring f, f and f. What is the value of f?
60o
400
If two sides of a triangle are 4 and 5, the third side must be less than what number?
9
400
If angle K is (c -20)o and its complement is 30o, what is the value of c?
80o
400
If two intersecting lines form angles of 30o and (x + 10)o that are vertical angles, what is the value of x?
20o
400
If the measure of angle 6 is (4x + 3) and the measure of angle 1 is (13x +7) what is the value of x?
10
500
If a triangle has angles n, 2n +10, 20, what is the value of n?
50o
500
If the sides of a triangle are 6, 8, and p, what is the range of possible values for p?
2 < p > 14
500
If angle T is xo and its supplement is (x + 20)o, what is the value of x?
800
500
If two intersecting lines form angles of 88o and (4x - 12)o that are vertical angles, what is the value of x?
25
500
Write a statement to prove that angle 3 and angle 11 are congruent.
Answers must include correct relationships amongst angles.