37 terms

trapezoid

A quadrilateral with exactly one pair of parallel sides

Parallelogram

A quadrilateral with both pairs of opposite sides parallel

Rhombus

A quadrilateral with four congruent sides

Pentagon

A five sided polygon

Hexagon

A six sided polygon

Heptagon

A seven sided polygon

octagon

An eight sided polygon

Nonagon

A nine sided polygon

Decagon

A ten sided polygon.

congruent

An exact same size and shape

transformation

changing the position of a shape on the coordinate plane

translation

slide

reflection

flip

rotation

turn

Line of symmetry

The imaginary line where you could fold the image and have both halves match exactly

Polygon

2 dimensions

made of at least 3 line segments that do not cross

sides are not curved

made of at least 3 line segments that do not cross

sides are not curved

REGULAR polygon

any polygon where all sides and all angles of the polygon are equal ( same exact measurement )

vertex

common point of two lines , line segments or rays

diagonal

A straight line inside a shape that goes from one corner to another ( but not An edge ) so if you join two vertices of a polygon which are not already joined by an edge , you get a diagonal.

triangle

a polygon with three angles and three sides

Quadrilateral

any polygon with four angles and four sides Includes specific polygons such as square , rectangles , parallelograms and trapezoids

Rectangle

A quadrilateral with four right sides

Square

A rectangle with four sides of equal length

vertical

going up and down like a column

The prime meridian and other lines of longitude are vertical

The prime meridian and other lines of longitude are vertical

angle

two rays sharing the same endpoint

the endpoint is called the vertex

the endpoint is called the vertex

Right angle

an angle measuring 90 degrees

Acute angle

an angle smaller than a right angle

obtuse angle

an angle larger than a right angle

intersecting lines

have one point in common

perpendicular lines

special intersecting lines that form right angles where they intersect

Parallel lines

lie in the same place and do not intersect

are always the same distance apart

do not share any points

are always the same distance apart

do not share any points

point

A location in space

has no length , width , or height

it is usually named with a capital letter

has no length , width , or height

it is usually named with a capital letter

endpoint

A special kind of point at which a line segment or ray ends

A RAY has ONE endpoint

A segment has TWO endpoints

A RAY has ONE endpoint

A segment has TWO endpoints

line

goes on forever in both directions

has no endpoints

has no endpoints

line segment

part of a line

has two endpoints

has two endpoints

ray

part of a line

has one endpoint and continues indefinitely in one direction

has one endpoint and continues indefinitely in one direction

horizontal

going side to side like a row

the equator and other lines of latitude are horizontal

the equator and other lines of latitude are horizontal