GEOMETRIC FIGURES VOCABULARY POLYGON Is a closed plane

GEOMETRIC FIGURES VOCABULARY

POLYGON • Is a closed plane figure formed by three or more line segments that meet at points called vertices.

HEPTAGON • Is a closed plane shape formed by SEVEN line segments.

NONAGON • Is a closed plane shape formed by NINE line segments.

REGULAR POLYGON • A polygon with all sides congruent and all angles congruent.

CONGRUENT • A figure with all the same length line segments and has the same measurement for each angle.

EQUILATERAL TRIANGLE • A triangle with three congruent sides.

ISOSCELES TRIANGLE • A triangle with 2 congruent sides.

SCALENE TRIANGLE • A triangle with no congruent sides.

QUADRILATERALS • A closed figure made by four sides and four angles.

PARALLELOGRAM • A closed shape with opposite sides congruent and parallel.

RECTANGLE • Is a special parallelogram with four right angles and four pairs of perpendicular lines.

SQUARE • Is a special parallelogram with four congruent sides and four right angles.

RHOMBUS • A special parallelogram with four congruent sides.

TRAPEZOID • A quadrilateral with exactly one pair of parallel lines.

POLYHEDRONS • A solid figure that has three dimension: height, width, length with faces that form polygons.

PRISM • Is a polyhedron that has two congruent polygons as bases.

PYRAMID • Is a polyhedron with only one base.

BASES • The bottom shape or face of a solid object.

LATERAL FACES • The polygons that connect with the base to form the sides of a polyhedron.

EDGES • Is a line segment that joins to vertices.

VERTEX OR VERTICES • Are a point where two or more line segments meet.

NETS • A pattern that you can cut and fold to make a model of a solid shape.