Chapter 1 Flashcards
Acute angle
An angle with a degree less than 90.
Adjacent angles
Two angles that lie in the same plane and have common vertex, and side but no common interior points.
Angle bisector
A ray that divided an angle into two congruent angles.
Between
The space from one point to another
Collinear
Points that lie on the same line
Complementary angles
Two angles that have a sum of 90 degrees
Construction
Methods of drawing geometric figures with the aid of measuring tools.
Coplanar
Points that lie in the same plane
Degree
The result from dividing the difference around a circle into 360 parts.
Distance
The the length between two end points.
Edge
The line segments where the faces intersect
Exterior
The outside
Face
A flat surface of a 3D figure
Interior
The inside
Intersection
The point/line where two geometric figures meet.
Line
Made up of points and has no thickness or width extending endlessly both ways.
Line segment
Can be measured and had two end points
Linear pair
A pair of adjacent angles with non common sides that are opposite rays.
Midpoint
The halfway point between the end points of the segment and
Obtuse angle
An angle with a degree of more that 90
Opposite rays
Collinear rays that share an end point
Perpendicular
Lines, segments, or rays that share an endpoint
Plane
A flat surface made up of points that extend infinitely in all directions.
Point
A location
Ray
A part of a line with one end point and extend infinitely in the other end
Right angle
An angle that has a degree of 90
Segment bisector
An segment, line, or plane that intersects a segment at its midpoint
Side
One of the lines that makes a 2d shape or a surface that makes a 3D shape
Space
A boundless, three dimensional set of all points
Supplementary angles
Angles with a measure of 180 degrees
Undefined term
(Points, lines, and planes)
Can only be explained though examples and descriptions
Vertex
The point where three or more edges intersect
Vertical angles
Two non adjacent angles formed by intersecting lines
