The Language of Common Core Geometry
Understanding the language or vocabulary of Geometry allows one to understand the process and function of Geometry problems.
Terms in this set (46)
-when two geometric figures have points in common
Points that lie on the same line
lying in the same plane
A parallelogram with four right angle ...four right angles ( in German rectangle means right angle)." A rectangle that is a 4 sided figure in which opposite sides are congruent and all angles are 90*."
a geometric figure that is made up of four line segments, called sides, that intersect only at their endpoints. This is a 4 sided polygon.
A triangle with three congruent sides
A 3 sided polygon that are congruent and have 360 * angles
point that divides a segment into two congruent segments
equidistant from the end points
Each angular point of a polygon, polyhedron, or other figure.
Common end point of an angle. A vertex is always in the middle.
part of a line with two endpoints
A part of a line between two endpoints.
A segment is named by its end-points.
A piece of a line
A straight path that goes without end in two directions.
A flat surface that extends infinitely in all directions.
single location in a plane
Example: where two lines intersect
A part of a line that starts at one endpoint and extends forever. The first letter in a ray must be the endpoint.
When you put opposite rays together they form a line.
To divide into two equal parts
3 types of lines
horizontal- (--) , vertical ( I ) , diagonal ( oblique) ( / )
5 types of angles
acute, right, obtuse, straight, reflex
An angle less than 90 degrees but more than 0 degrees
An angle that is 90 degrees (It makes a square in the corner).
An angle that measures more than 90 degrees but less than 180 degrees
An angle that is always 180 degrees
An angle that measures more than 180 degrees and less than 360 degrees. (This is the rest of the circle)
360* - X = reflex angle
Angles that have a common side and a common vertex (corner point).
pair of adjacent angles whose non-common sides are opposite rays (form a straight line)
Having the same size and shape
2 angles that add up to 180 degrees
Angles whose measures add up to 90 degrees
ACUTE angles are the only angles that are complementary
Angles that are opposite of each other and are congruent.
Many sided plane figure
Example: triangle-" tri " means 3 sided angle
(The plural is polyhedra) A three dimensional object whose surfaces are composed of polygonal regions; a many sided , 3 dimensional,3 sided, solid.
one after another
Two angles that are adjacent and one after the other.
a straight line through a figure from one corner to another corner
a quadrilateral that has a dent in it
A parallelogram with four equal sides
A diamond shape
5 sided polygon
6 sided polygon
7 sided polygon
8 sided polygon
10 sided polygon
12 sided polygon