A closed shape Only straight line segments (not round) Can be regular (all sides same length) Or Irregular (sides are different lengths)
POLYGONS
A type of triangle
With equal length sides
And same size angles
Equilateral
triangles
straight line, never ends in either direction
Line
Angles that are made when two lines intersect.
They are always Congruent / same
Vertical Angles
What is this shape?
A Cube
A quadrilateral with Two sets of parallel sides Each set is equal in length Includes rectangles, squares, rhombus
Parallelograms
A type of triangle
With two sides the same
And two angles the same
Isosceles
triangles
has one endpoint
Ray
means “same”
Congruent
Angles
What shape is this?
A Rectangular Prism
Or A Cuboid
Lines that cross, making four right angles
Perpendicular Lines
A type of triangle
Sides are all different lengths
And all different angles
Scalene
triangles
Angles that share a ray
Adjacent Angles
For 3D shapes
Points/Corners where three edges meet
Vertices (3D)
The measurement of the distance around the 2D shape
PERIMETER
Two lines that will never intersect
Parallel Lines
A type of triangle
With one Obtuse angle
Obtuse triangles
Adjacent Angles that make a 90 degree angle
Complementary Angles
For 3D shapes
A line segment where two faces meet
Edges (3D)
The measurement of the space inside
a 2D shape.
AREA
A Quadrilateral
A Parallelogram
Four equal length sides
Opposite angles same
Includes squares
Rhombus
A type of triangle
With all acute angles
(e.g. equilateral triangles are always acute angles)
Acute triangles
Adjacent angles that make a 180 degree angle
Supplementary Angles
For 3D shapes
The flat surface of a 3D shape
Faces (3D)
The measurement of what can fit inside a 3D shape.
VOLUME