A closed shape
Only straight line segments (not round)
Can be regular (all sides same length)
Or Irregular (sides are different lengths)
POLYGONS
A Quadrilateral
Only ONE set of parallel sides
Trapezoids
A type of triangle
With one Right Angle
Right triangles
Adjacent Angles that make a 90 degree angle
Complementary Angles
For 3D shapes
A line segment where two faces meet
Edges (3D)
A quadrilateral with
Two sets of parallel sides
Each set is equal in length
Includes rectangles, squares, rhombus
Parallelograms
A Quadrilateral
Two pairs of congruent sides that are
Adjacent to each other.
Not a parallelogram
Two diagonals are perpendicular
The diagonals are not the same length
Kites
A type of triangle
With one Obtuse angle
Obtuse triangles
Adjacent angles that make a 180 degree angle
Supplementary Angles
For 3D shapes
The flat surface of a 3D shape
Faces (3D)
Lines that cross, making four right angles
Perpendicular Lines
A type of triangle
With equal length sides
And same size angles
Equilateral
triangles
A type of triangle
With all acute angles
(e.g. equilateral triangles are always acute angles)
Acute triangles
Angles that are made when two lines intersect.
They are always Congruent / same
Vertical Angles
A Cube
Vertices: 8
Edges: 12
Faces: 6
What is this shape?
How many Vertices/Edges/Faces?
Two lines that will never intersect
Parallel Lines
A type of triangle
With two sides the same
And two angles the same
Isosceles
triangles
Line - straight line, never ends in either direction
Line Segment - part of a line. Has two endpoints
Ray - has one endpoint.
Line
Line Segment
Ray
Congruent means “same”
Congruent
Angles
A Triangular Prism
Vertices: 6
Edges: 9
Faces: 5
What shape is this?
How many Vertices/Edges/Faces?
A Quadrilateral
A Parallelogram
Four equal length sides
Opposite angles same
Includes squares
Rhombus
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)
A Square Pyramid
Vertices: 5
Edges: 8
Faces: 5
What shape is this with a square base?
How many Vertices/Edges/Faces?