Puzzle of the Language of Geometry Crossword

a polygon with ten straight sides and angles
a part of a figure cut off by a line or plane intersecting it
two angles that add up to equal 180 degrees
a figure with four equal sides and four right angles
having a common vertex and a common side
a polygon with three straight sides and three angles
a polygon with nine straight sides and nine angles
a quadrilateral with two pairs of parallel sides
a quadrilateral with only one pair of parallel sides
a straight line at an angle of 90 degrees to a given line, plane or surface
two angles that there sum add up to be 90 degrees
a four sided figure with four straight sides
a quadrilateral with four right angles
the distance around a two dimensional shape
a figure bounded by segments closing in a loop
a seven sided polygon
the longest side of a right triangle
has two sides of equal length
a figure formed by two rays, sharing a common endpoint
a figure whose four sides all have the same length
a figure with eight straight sides and angles
a quadrilateral figure having two pairs of equal adjacent sides
a figure with five straight sides and angles
a figure with twelve sides
a figure with six straight sides and angles