Parallel lines
Straight lines that never intersect
Fill in the blank:
Vertical angles are ______
Supplementary angles add up to _______
congruent
180
What are <1 and <7 called?
alternate exterior angles
What does CPCTC stand for?
Congruent Parts of Congruent Triangles are Congruent
Corresponding Angles
Angles in the same position that are congruent
What is an angle that measures 180 degrees?
straight angle aka a straight line
What is the value for x in the diagram. What angle rule did you use?
128 degrees, because they are vertical angles which are always congruent
If the measure of angle 1 is 37, what is the measure of angle 6? What is the angle relationship?
< 1, <4, <5 and < 8 are all 37
180-37 = 143 so <6 is 143 degrees
What is the word that combines the meanings "earth" and "to measure".
geometry
Supplementary Angles
Angles that add up to 180 degrees
What is a triangle that has two sides with the same measure?
isosceles triangle
Find the value of x and explain what angle relationship you used to reach your answer.
x = 63
180 - 117 = 63
What are <4 and <8 called?
corresponding angles
Railroad tracks are examples of what type of lines?
parallel
Vertical Angles
Two lines that cross
What is a triangle with three equal sides?
equilateral triangle
x=33
23 + 124 = 147
180 - 147 = 33
What are <4 and <5 called?
alternate interior angles
What are the three rigid motions (transformations)
Reflection, rotation, translation
Alternate Interior Angles
Z rule aka my namesake
What is a triangle with three sides of different measures?
scalene triangle
Two angles are corresponding. The measure of the first angles is 42 degrees, what is the measure of the second angle?
42 degrees
What is the line that cuts them off
a transversal
If triangle ABC is congruent to JKL, what are two corresponding parts? (there are 6)
Segment AB to JK, Segment BC to KL Segment AC to JL
Angle A to Angle J, Angle B to Angle K, Angle C to angles L