1
Two lines that cross each other at a 90° angle, also known as a right angle.
The symbol is ⊥
Perpendicular
A point where two or more line segments meet. A corner.
Vertex
To break something into parts, that together are the same as the original.
Decompose
The same shape and size, but we are allowed to flip, slide or turn.
Congruent
This number says how many times to use that number in a multiplication.
It is written as a small number to the right and above the base number.
Exponent
Put together shapes to form a new figure.
Compose
Always the same distance apart and never touching.
Parallel
For a polygon: A line segment on the boundary joining one vertex (corner point) to another.
For a polyhedron: A line segment where two faces meet.
Edge
The distance from top to bottom
OR
at right angles from any base to the furthest corner.
Height
A geometric shape with two sets of parallel sides
Parallelogram
The measurement of the space on the surface of a shape.
Area
A prism with a top and bottom (base) that are congruent rectangles.
Rectangular Prism
The total area of the surface of a three-dimensional object.
Surface Area
A flat figure that is made up of straight lines and is enclosed.
Polygon
A number multiplied by itself.
Squared
The amount of 3-dimensional space an object occupies (the capacity).
Volume
A cube number is a number multiplied by itself twice.
Cubed
The surface a solid object stands on, or the bottom line of a shape such as a triangle or rectangle.
Base
A solid object with two identical ends and flat sides with the cross section of a triangle.
Triangular Prism
A solid object where:
The sides are triangles which meet at the top (the apex).
The base is a polygon (a flat shape with straight sides)
Pyramid
Any of the individual flat surfaces of a solid object.
Face
A flat shape with four straight sides.
Quadrilateral
A 2D pattern that can be folded into a 3D figure.
Net
A solid with flat faces.
Each flat face is a polygon.
Polyhedron
13= 1x1x1=1
23=2x2x2=8
What type of number are these an example of?
Cubed