Triangles
A triangle with all sides and angles equal.
Equilateral Triangle
A 4 sided polygon with all sides and angles equal.
Square
A polygon with 5 sides and angles.
Pentagon
A triangle with no sides and angles equal
Scalene Triangle
Formula for area of a parallelogram.
B x H
A triangle with acute angles in it.
Acute Triangle
A 4 sided polygon with 1 pair of parallel sides.
Trapezoid
A polygon with 6 sides and angles
Hexagon
The amount of space covered.
Area
The distance around a polygon.
Perimeter
A triangle with at least 2 sides and angles equal
Isosceles Triangle
A 4 sided polygon with 2 pairs of equal sides.
Rectangle
A polygon with 9 sides and angles
Nonagon
This is the definition of a concave polygon...
A polygon that has one or more interior angles greater than 180°
(Result: some vertices point 'inwards', towards the the center.)
How to find the perimeter for a polygon
Add up all the sides.
A triangle with an obtuse angle in it.
An Obtuse triangle.
Any polygon with 2 pairs of parallel sides.
Parallelogram
A polygon with 7 sides and angles.
Heptagon
Formula for finding the area of a triangle
1/2 (b*h)
What is a rhombus?
a parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides