an angle with measure greater than 0 degrees and less than 90 degrees
a triangle in which all three angle measures are less than 90 degrees
the measure in square units of the interior region of a plane figure or the surface of a three dimensional figure
area of triangle
base times height and divide by two
a special side of a polygon used to compute area
a shape made of several simpler figures
a segment that joins two vertices of a polygon and is not one of the sides
inverse of multiplication
triangle with all three sides the same length
the perpendicular distance between two bases, or a vertex and a base
a polygon with 6 sides
a triangle with at least two sides equal in length
a part of a line with endpoints
an angle greater than 90 degrees and less than 180 degrees
a polygon with eight sides
two lines which never intersect and are the same distance apart
a quadrilateral with opposite sides parallel
a polygon with five sides
lines, segments or rays that intersect to form right angles
a two dimensional closed figure with straight line segments connected end to end
a polygon with four sides
a portion of a line that has one endpoint and extends forever in one direction
a quadrilateral with four right angles
a polygon with all sides congruent and all angles having the same measure
a quadrilateral with four congruent sides
an angle with a measure of 90 degrees
a triangle with one right angle in it
a triangle with no two sides of equal length
a quadrilateral with four congruent sides and four rigth angles
units used to describe the measure of an area in the form of 1 * 1 unit squares
a problem solving strategy which breaks problems into smaller parts which must be solved in order to solve the original problem
quadrilateral with exactly one pair of parallel sides
a polygon with three sides
the point at which two rays, line segments or lines meet.
angles opposite each other when two lines intersect.
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