Prefixes
A prefix meaning three
tri
A prefix meaning nine.
non
Two shpaes of exactly the same shape but not neccessarily the same size.
similarity
The point where the sides of a 2D figure meet
Vertex
Plural is Vertices
a tool used to measure and draw angles
protractor
a straight path that continues in opposite directions without ending
line
The prefix meaning five.
pent
A prefix meaning ten.
dec
Square
A unit of measure for angles.
degree
A 2D figure with no straight sides and no vertices
circle
a 90 degree angle
right angle
an exact place or location in space
point
A prefix meaning six.
hex
A prefix meaning two.
bi
Two shapes of exactly the same size and shape.
congruent
a line dividing a figure into 2 parts that are congruent and mirror images
Line of symmetry
angle that measures less than 90 degrees
acute angle
lines that cross at any angle
intersecting lines
A prefix meaning one.
uni
The prefix meaning seven.
hept
A closed figure formed by line segments.
polygon
parallelogram
a quadrilateral with only 1 set of parallel lines
trapezoid
an angle that measures more than 90 degrees
obtuse angle
lines that never cross, that are the same distance apart
parallel
The prefix meaning eight.
oct
A prefix meaning four.
quad
a polygon with 4 sides and 4 vertices
polygon
a parallelogram with opposite sides congruent and 4 right angles (90 degree angles)
rectangle
a triangle with all the angles the same
equilateral triangle
lines that cross at a 90 degree angle. (right angle)
perpendicular