Perimeter
the measure of the distance around a figure
perimeter
a measure of the amount of surface enclosed by a figure; it's measured in square units
area
a flat 2D surface of a 3D shape
face
What kind of triangle has three equal sides and three equal angles?
Equilateral triangle
a closed figure with three or more lines
polygon
this word describes the measurement that "surrounds" a figure
perimeter
Usually opposite the base (they meet at a 90 degree angle). You can also find this if you drop a rock from the top.
height
a 2D pattern that can be folded into a 3D shape
net
This type of triangle has two equal sides and two equal angles.
Isosceles triangle
a measurement of a figure - usually at the bottom; it's one of the dimensions for the area of a rectangle
Base
A measurement often used with width to describe a figure
length
When you find the areas of all the surfaces
surface area
a triangle with three different side lengths and three different angle measures
scalene triangle
a type of polygon when all sides are equal and all angles are equal
regular polygon
the distance across a circle that passes. through the middle of the circle; it cuts the circle into halves
diameter
the amount of space in a 3D shape measured in cubic units
volume
straight lines that continue the same distance apart
parallel lines
An angle that measures 90 degrees
right angle
The distance around a circle; ike the perimeter of a circle
circumference
lines that meet at a 90 degree angle
perpendicular lines
a point where two edges, rays or lines meet
vertex