vocab
A triangle with one angle measuring more than 90 degrees
Obtuse triangle
A closed plane figure with segments as sides that meet only at the endpoints
Polygon
A polygon having all sides of equal length
equilateral
A polygon with 4 sides
quadrilateral
A polygon with 6 sides
hexagon
A triangle with at least 2 congruent sides
isosceles
A polygon having the property that any segment drawn from 2 interior points will lie completely within it
convex
A segment connecting 2 non-consecutive or non-adjacent vertices of a polygon
diagonal
A quadrilateral with 4 right angles
rectangle
A polygon having all sides and all angles congruent
regular polygon
A polygon with 5 sides
pentagon
A triangle with no congruent sides
scalene
A polygon with all angles having the same measures
equilangular
A polygon with 10 sides
decagon
A quadrilateral with only 1 pair of parallel sides
trapezoid
A triangle with all angles measuring less than 90 degrees
acute triangle
A quadrilateral with only 1 pair of parallel sides
parallelogram
A quadrilateral with 2 pairs of parallel sides
rhombus
a polygon having the property that any segment drawn from 2 interior points may lie outside it
Concave
The number of unit squares needed to cover a figure
area
The distance around a figure
perimeter
The distance across a circle through its center
diameter
The distance around a circle
circumference
A polygon with 7 sides
heptagon
The distance between a circle’s center to any point on the circle
radius