Triangle sum theorem
What is the third angle of the triangle?
90, 30, x
60
A straight angle is _______ degrees.
180
Two interior angles are 55 and 80. What is the exterior angle?
135
The 2 interior angles are 70 and 40. What is the missing interior angle?
70
These lines have a slope that is the negative reciprocal of each other
What is angle B?
50, B, 45
85
Two angles that add up to 180 degrees are called ______ angles.
Supplementary
The sum of the interior angles equal 112, what is the measure of the exterior angle?
The 2 interior angles are 60 and 80. What is the missing interior angle?
40
Parallel lines have what kind of slope?
same slope
What is the third angle of the triangle
15, 86, x
79
The sum of three interior angles of any triangle will always add up to _____
180 degrees
The interior angles are 15 and 19. What is the measure of the exterior angle?
34
Add the x-values and divide by 2, add the y -values and divide by 2.
Find the midpoint of (1,7) (5,11)
(3,9)
Use the two angles to find the missing angle.
25, 140
15
The sum of 2 remote interior angles equals the _______ angles.
exterior
The sum of the two interior angles are 99. What is the measure of the exterior angle?
99
The 2 interior angles are 40 and 40. The exterior angle is 3x+20. What is the missing interior angle? Also solve for x.
100
x = 20
What is the equation of the line perpendicular to y=7x-4?
y= -1/7x -4
Use the three angles to solve for x.
35, 90, 5x+10
9
The exterior angle is equal to the sum of the measures of two _______ interior angles
remote
What does the exterior angle theorem state?
The sum of two remote interior angles is equal to the exterior angle.
The 2 interior angles 50 and 70. The exterior is 120. What is the missing interior angle?
60
What angle is complementary to 75?
15