Definitions
Infinitely long and made up of infinitely many points.
A line
Find the midpoint of (3,1) and (7,5)
(5,3)
Two angles that add up to 90 degrees are....
Complementary
The measure of an angle is 156°. What is the measure of its supplementary angle?
24°
Slopes of parallel lines are
the same
Part of a line defined by two endpoints.
Line segment
What is the midpoint of (10,13) and (-4,-9)
(3,2)
Two angles that add up to 180 degrees are...
Supplementary
The measure of an angle is 64°. What is the measure of its complementary angle?
26°
Slopes of perpendicular lines are
flipped fractions and swap signs
a straight line extending indefinitely in one direction from a point
Ray
What is the other endpoint if one endpoint is (3,6) and the midpoint is (5,8).
(7,10)
Angles that are directly across from each other are ______ which means they are _________.
Vertical
Congruent/equal
Given a pair of vertical angles that equal 56o and 4x+4, solve for x.
x=13
Given line p and q are parallel, and the slope of line p is -5/4. What is the slope of line q.
-5/4
figure that forms when two rays meet at a common point
Angle
What is the other endpoint if one endpoint is (-1,2) and the midpoint is (3,5).
(7,8)
The angles in a triangle add up to .....
180 degrees
What do we use to solve for x when given an angle broken into parts?
part + part=whole
Given line p and q are perpendicular, and the slope of line p is 8/7. What is the slope of line q.
-7/8
3 or more points that can be connected by a line.
Colinear
Given two points, (3,5) and (6,2). One is an endpoint, and one is a midpoint. Identify the possible endpoints.
(9, -1) and (0,8)
Alternate Exterior angles are
Congruent
A pair of vertical angles have the equations
3x+4 and 8x-1
Solve for x.
x=1
Calculate the slope of the line containing points (3,8) and (27,20)
1/2