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Geometry Gr5

Chpt 13 & 14 MC5

Area The number of square units needed to cover the inside of a region or plane figure.
Cone A 3-dimensional figure with a curved surface, a circular base, and one vertex.
Cube A 3-dimensional figure with six congruent square faces, * vertices and 12 edges
Cubic Unit A unit for measuring volume, such as a cubic inch or a cubic centimeter.
Cylinder A 3-dimensional figure having two parallel congruent circular bases and a curved surface connecting the two bases.
Perimeter The distance around a shape or region
Rectangle A quadrilateral with four right angles; opposite sides are equal and parallel
parallelogram A quadrilateral with four sides in which each pair of opposite sides are parallel and equal in length.
parallel lines Lines that are the same distance apart. Parallel lines do not intersect.
Pentagon A polygon with five sides.
Plane Figure A 2-dimensional figure that lies entirely within one plane such as a triangle or square.
Polygon A closed plane figure formed using line segments that meet only at their endpoints.
pyramid A solid figure with a polygon as a base and triangular shaped faces that share a common vertex.
prism A 3-dimensional figure with two parallel, congruent polygons as bases and parallelograms for faces.
perpendicular lines Lines that meet or cross each other to form right angles.
Acute Angle An angle with a measure greater than 0° and less than 90°.
congruent angles Angles with the same measure.
Edge The line segment where two faces of a 3-dimensional figure meet.
Endpoint The point at either end of a line segment or the point at the beginning of a ray.
Hexagon A polygon with six sides and six angles.
Intersecting Lines Lines that meet or cross at a point.
Line A set of points that form a straight path that goes in opposite directions without ending.
Line Segment A part of a line between two endpoints. The length of the line segment can be measured.
Length Measurement of the distance between two points.
Obtuse Angel An angle that measures greater than 90° but less than 180°.
Octogon A polygon with 8 sides.
quadrilateral A shape that has 4 sides and 4 angles.
Ray A part of a line that has one endpoint and extends indefinitely in one direction.
rectangular prism A 3-dimensional figure with six faces that are rectangles.
regular polygon A polygon that is both equilateral and equiangular.
rhombus A parallelogram with four congruent sides.
Right Angle An angle with a measure of 90°, formed by perpendicular lines.
Translation/Slide To move a figure along a line in any direction for a given distance. Also called a translation.
Sphere A 3-dimensional figure that is set of all points that are the same distance from a given point, called the center.
Square A rectangle with four congruent sides.
Square Unit A unit for measuring area, such as square inch or square centimeter.
Straight Angle An angle with a measure of 180°.
line symmetry A line that can be drawn through the figure which splits the figures into 2 halves that match.
Trapezoid A quadrilateral with exactly one pair of parallel sides.
triangular prism A prism whose bases are triangular with parallelograms for sides.
triangular pyramid A pyramid whose base is a triangle.
Rotaion The process of moving or turning a figure around a point.
Vertex The point where two rays meet in an angle.
Volume The number of cubic units needed to fill a 3-dimensional figure or solid figure.
Width The measurement of distance from side to side telling how wide.
three-dimensional figure (3-D) A figure that has length, width, and height.
Created by: ekahl5