Angles that are opposite over two intersecting lines.
What are vertical angle pairs?
100
Segments that have the same measure.
What are congruent segments?
100
The absolute value of a - b
What is the distance formula on the number line?
100
Angle with a measure of 90 degrees.
What is a right angle?
200
If a = b and c does not equal 0, then a/c = b/c.
What is the division property of equality?
200
A line that cuts through two or more lines.
What is a transversal?
200
A part of a line containing two endpoints and every point between those two endpoints.
What is a line segment?
200
The average between two numbers.
What is the midpoint formula on the number line?
200
Angles that add up to 90 degrees.
What are complementary angles?
300
If a = b, then b = a.
What is the reflexive property of equality?
300
The angles between two lines cut by a transversal.
What are interior angles?
300
Points, lines and planes
What are the undefined terms of geometry?
300
A coordinate pair where the first is the average of the x-coordinates and the second is the average of the y-coordinates.
What is the midpoint formula on the coordinate plane?
300
Anything that divides a segment into two congruent parts.
Segment Bisector
400
If a = b and b =c, then a = c.
What is the transitive property of equality?
400
Exterior angles on the same side of a transversal.
What are consecutive exterior angles?
400
If three points A, B and C are colinear, and B is between A and C, then AB + BC = AC
What is the segment addition postulate?
400
Given a right triangle, the square of the hypotenuse equals the sum of the squares of the legs.
What is the Pythagorean Theorem?
400
When geometric objects are created using just a compass and a straight edge.
What is construction?
500
If a = b, then f (a) = f (b).
Example: If x = 3, then 4*x = 4*3.
What is the substitution property of equality?
500
The angles in matching corners of two lines crossed by a transversal.
What are corresponding angles?
500
Given two points A and B on a line, a number line can be chosen so that point A is at 0 and point B is at a positive number.
What is the ruler postulate?
500
First you find the distance change in the x-coordinates and then the distance change in the y-coordinates. You square both separately, add them together and finally square root it.
What is the distance formula on the coordinate plane?