lines
straight line, never ends in either direction
line
A type of triangle
With all acute angles
acute triangle
A closed shape
Only straight line segments (not round)
Can be regular (all sides same length)
Or Irregular (sides are different lengths)
POLYGONS
Congruent means “same”
CONGRUENT ANGLES
The measurement of what can fit inside a 3D shape
volume
Lines that cross, making four right angles
Perpendicular lines
A type of triangle
With one Obtuse angle
OBTUSE
TRIANGLE
rhombus
A Quadrilateral
A Parallelogram
Four equal length sides
Opposite angles same
Includes squares
For 3D shapes
Points/Corners where three edges meet
VERTICES
The SUM of all AREAS of a 3D shape
SURFACE AREA
Two lines that will never intersect
PARALLEL LINES
A type of triangle with only right angles
RIGHT
TRIANGLE
A Quadrilateral
Only ONE set of parallel sides
trapezoid
For 3D shapes
A line segment where two faces meet
EDGES
A whole number with a fraction
MIXED NUMBER
part of a line. Has two endpoints
Line Segment
A type of triangle
Sides are all different lengths
And all different angles
SCALENE
TRIANGLE
A quadrilateral with
Two sets of parallel sides
Each set is equal in length
Includes rectangles, squares, rhombus
PARALLELOGRAMS
For 3D shapes
The flat surface of a 3D shape
FACES
The number below the fraction bar
DENOMINATOR
has one endpoint.
Ray
A type of triangle
With two sides the same
And two angles the same
ISOSCELES TRIANGLE
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
kite
the measurement of the space inside
a 2D shape.
AREA
The number above the fraction bar
NUMERATOR