x - 4= 5
x=9
Parallel Lines
Two lines that never touch; going the same direction.
Angles with a sum of 180 degree
Supplementary Angles
What kind of angle is this?
acute
33x = 99
x = 3
2= y + 1
y=1
The line that crosses two or more parallel lines.
Transversal
Angles that equal 90 degrees
Complementary Angles
What type of angle is this?
obtuse
4x=120
x=30
5x = 30
x=6
Angles that have the same measure, no matter their size or length of sides.
Congruent Angles
Complementary angle to 60 degree angle.
30 degrees
What is the degree measurement of a straight line?
180
2,345 - x = 1,462
x = 883
12 + x = 15
x= 3
Angles with the same measure and opposite of each other.
Vertical Angles
Supplementary angle to 60 degree angle.
120 degrees
What is this angle?
right angle
328/4
82
33 = 6 + x
x = 27
Angles that share a vertex and a side.
Adjacent Angles
2 angles that are 25 degrees
Congruent Angles
What is the measurement of an acute angle
1-89 degrees
3x=72
14