Geometry Vocabulary
Angle Relationships
Addition Postulates
Slope: Parallel and Perpendicular Lines
100
What is a line segment?
A section of a line with two endpoints.
100
What kind of angles are 1 and 3, and 2 and 4
Vertical angles
100
State the segment addition postulate.
If a point B lies on a line segment between points A and C, the sum of the lengths of the two smaller segments (AB, BC) equals the total length of the larger segment (AC)
100
What does m represent in y=mx+b?
slope
200
What is a ray?
A part of a line that has a fixed start point, but no endpoint.
200
Supplementary angles are two angles whose sums add to...
180
200
State the angle addition postulate.
If we place two or more angles side by side (such that they share a common vertex and a common arm between each pair of angles) then the sum of those angles will be equal to the total sum of the resulting angle
200
What are parallel lines?
Two lines in the same plane that never intersect and have the same slope
300
What is the difference between a vertical line and a horizontal line?
A vertical line goes up and down, whereas a horizontal line goes side to side.
300
Complementary angles are 2 angles who's sums add up to ...
90 degrees
300
If AB=6 and BC=8, find AC
14
300
The slope of line A is 4. The slope of line B is -4. Are these lines parallel, perpendicular, or neither?
neither
400
Describe the difference between obtuse, acute, and right angles.
Obtuse angles are more than 90 degrees, acute angles are less than 90 degrees, and right angles are exactly 90 degrees.
400
Find x
56
400
If m∠1=35° and m∠2=45°, find the larger angle.
80
400
What is the slope of a line perpendicular to y=-6x+ 2?
1/6
500
What is a plane?
A two-dimensional space that extends infinitely.
500
Solve for x
x= 16
500
Points A, B, and C are collinear. Point B is between A and C. Solve for x
AC = 3x+3, AB = -1+2x, and BC = 11
7
500
Determine if the two lines 2x - 9y = -18 and y=2/9x - 3 are parallel, perpendicular, or neither
neither