Parallel Lines and Transversals
Pairs of opposite angles formed by intersecting lines
Vertical Angles
What does "congruent" mean?
Equal
What is the sum of the three interior angles in any triangle?
180 degrees
A transformation that slides a figure without turning it.
What is a translation?
What is the first step to solve this equation: 4n - 2n = 4
What is subtract 4n-2n=2n
Angles in the same relative position (in matching corners)
Corresponding Angles
Congruent
If a triangle has a 110 degree angle and a 40 degree angle, how many degrees is the missing angle?
30 degrees
A transformation that flips a figure over a line.
What is a reflection?
2n=4 is the next step is
What is divide 2 by both sides.
Angles outside the parallel lines and on opposite sides of the transversal are called:
Alternate Exterior Angles
Are vertical angles congruent or supplementary?
Congruent
If a straight angle is cut into 3 parts and one of the angles is 25 degrees and another is 50 degrees, how many degrees is the missing angle?
105 degrees
If the two remote interior angles of a triangle are 40 and 30, what is the measure of the exterior angle?
Turning a figure around a fixed point.
What would you do first to solve this equation: 24 = 6(-x-3)
What is distribute the 6 through the quantity.
Angles inside the parallel lines and on opposite sides of the transversal
Alternate Interior Angles
100
Could these angles create a triangle?
40 degrees, 90 degrees, 40 degrees
A transformation that preserves distance and angle measure.
What is a rigid transformation?
The next step to solve this equation: 24 = -6x-18
What is add 18 to both sides
Supplementary angles add up to:
180 degrees
If a transversal cuts a straight angle and one of the angles is 45 degrees, how many degrees is the other angle?
135
If a triangle has a right angle and a 30 degree angle, what is the measurement of the missing angle?
60 degrees
A rotation of 180° always produces this type of symmetry.
What is point symmetry?
The next step to solve this equation: 42=-6x
What is divide both sides by -6