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43 Cards in this Set
 Front
 Back
right angle

a 90 degree angle (the size of the corner of a sheet of paper)


cube

a special solid with 6 faces


A polygon with 5 sides

pentagon


faces

A flat polygon or the sides of a solid.


scalene triangle

all sides and angles of the triangle are different


width

How wide a figure is


vertices

3 or more lines that meet at a point.


height

how tall an object is


equilateral triangle

all 3 sides and angles are the same


Three Dimensional Figures

Solid figures that have height, width, and depth


plane

all the points that form a flat surface


length

how far back an object goes


intersecting lines

lines that meet or cross each other


pi

3.14, the ratio of the circumference of a cicle to the length of its diameter


A polygon with 6 sides

hexagon


rectangular prism

a solid


point

an exact location and shows where something stops


width

How wide a 3D figure is


edges

when 2 faces meet they form an edge.


perpendicular

lines that intersect and form square corners (straight up and down)


A polygon with 7 sides

heptagon


acute angle

an angle less than 90 degrees (smaller than the corner of a sheet of paper)


A polygon with 8 sides

octagon


quadrilateral

any shape that has 4 sides


a polygon with 9 sides

nonagon


ray

part of a line that has 1 endpoint


A polygon with 10 sides

decagon


line

a straight path that goes on forever in both directions


flip

to turn a figure over or change its position


isosceles triangle

triangle in which 2 sides are the same


diameter

a chord that passes through the center of the circle


parallel lines

2 lines that run side by side and never cross each other


slide

to move a figure without changing its size or shape


obtuse angle

greater than 90 degrees (larger than the corner of a piece of paper)


turn

to rotate a figure around a vertex (POSITION CHANGED, SIZE AND SHAPE DO NOT)


line segment

part of a line and it has 2 endpoints


degree

the unit name for measuring angles


polygon

is a closed figure


chord

a line that connects 2 points on the circle


triangle

has 3 sides and 3 angles


congruent

figures that have the same shape and size


radius

A line segment that connects the center with a point on the circle


prism

a solid figure that has 2 congruent faces
