Two lines that intersect to form right angles
lines that cross at one point
lines in the same plane that never intersect
The common endpoint of an angle
Having the same size,length or angle measure
a closed 2-dimensional shape formed by three or more straight line segments.
a quadrilateral with exactly 1 pair of parallel sides
A quadrilateral opposite sides are congruent and parallel,no right angles
a parallelogram with 4 right angles
a parallelogram with 4 congruent sides,no right angles
a parallelogram with 4 right angles and 4 congruent sides
a triangle with two congruent sides
a triangle with 1 angle greater than 90 degrees
A triangle with 3 congruent sides and 3 congruent angles
a triangle with no congruent sides
a triangle with one 90 degree angle
A triangle with three angles less than 90 degrees.
a polygon with four sides,the general term
a five-sided polygon
a polygon with 6 sides
A polygon with 8 sides
a polygon with all sides and all angles equal or congruent
flat/plane polygons that make up the sides of a 3-dimensional solid
points or corners of a polygon or 3-dimensional solid
a line segment where two faces meet on a 3-dimensional solid
a 2-dimensional representation of a 3-dimensional solid
The number of square units needed to cover a given polygon
The length, width, and height of an object being measured.
The sum of all the areas of all the faces of a 3-dimensional solid.
The amount of space inside a 3-dimensional solid measured in cubic units.