A 3D object that has no edges, faces
or vertices
Sphere
A 3D object that has 2 circular faces
and a rounded side
Cylinder
Cone
Cube
Rectangular Prism
Square Pyramid
A 3D object that has 1 circular fact
and a rounded side that ends in a
point
A 3D object that has 6 faces, 12
edges and 8 vertices – all the faces
are squares
A 3D object that has 6 faces, 12
edges and 8 vertices – 4 of the faces
are rectangles
A square pyramid has a square base
and triangle sides – 5 faces, 8 edges
and 5 vertices.
A part of a line with 2 end points.
Line Segment
A line goes on in both directions
forever. It has arrows on both ends.
Line
A ray has 1 end point and goes in one
direction forever.
Ray
A right angle is a square corner.
Right Angle
Acute Angle
Obtuse Angle
An acute angle is smaller than a
right angle
An obtuse angle is larger than a right
angle
Parallel lines are two lines that will
never cross
Parallel Lines
Perpendicular Lines
Perpendicular lines cross at a right
angle
Intersecting lines cross at any angle
Intersecting Lines
A point is a spot on a line
Point
A 2D round shape
Circle
Square
A 2D 4 sided figure. All 4 sides are
the same length and it has 4 right
angles. It has 2 pairs of parallel
sides.
Rectangle
A 2D 4 sided figure. Two opposite
pairs of sides are the same length
and it has 4 right angles. It has 2
pairs of parallel sides.
A 2D 3 sided figure.
Triangle
Trapezoid
A 2D 4 sided figure with one pair of
parallel sides.
A 2D 5 sided figure.
Pentagon
A 2D 6 sided figure.
Hexagon
A 2D 8 sided figure.
Octagon
A 2D 10 sided figure
Decagon
Any 4 sided figure
Quadralateral
A closed figure with all straight sides
Polygon
A figure with 2 pairs of parallel sides
Parallelogram
The amount of space inside a figure
Area
Perimeter
Symmetry
The distance around the outside of
figure.
A line that divides a figure into 2
mirror images
Moving the position of a figure
Slide/Translation
A figure that has been flipped over
Flip/Reflection
Turn/Rotation
A figure that has been turned on one
point of the figure
Two figures that are the same size
and same shape
Congruent
A vertex is a point where 3 faces
meet
Vertex
An edge is where 2 faces meet
Edge
Face
A face is a flat surface on a 3
dimensional figure
A corner is where 2 sides meet on a 2
dimensional figure
Corner