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Getting into Shapes - M3
Terms in this set (49)
an angle whose measure is greater than 0˚ but less than 90˚
a shape that connects back on itself. A closed shape can be drawn using one continuous stroke.
equal in measure. Identical in size and shape, but may have a different location and orientation.
an angle whose measure is greater than 90˚ but less than 180˚
two or more lines in the same plane that do not intersect and remain a constant distance from one another
a quadrilateral whose opposite sides are equal in length and parallel
two lines that intersect to form right angles
a simple, closed shape with three or more line segments as sides
a polygon with four sides
a parallelogram with four right angles. Note: a square is also a rectangle.
a parallelogram with four sides of equal length. Note: a square is also a rhombus.
an angle that measures exactly 90˚
a shape that does not have any line segments that cross over each other.
a parallelogram with four sides of equal length and four right angles
a quadrilateral with exactly one pair of opposite sides parallel.
a specific example that proves a mathematical statement is false
a shape in which all sides are equal in length
polygons that have all angles congruent and all sides congruent
a three-dimensional shape with one circular or elliptical base and one vertex
the face that results when a plane intersects a solid shape
a rectangle prism with six square faces
a three-dimensional shape with two non-polygonal congruent parallel bases, usually in the shape of a circle
a line segment along which two faces of a three-dimensional shape meet
a flat side of a three-dimensional shape
polyhedron (pl. polyhedra)
a three-dimensional shape whose faces are polygons
a polyhedron with two parallel congruent bases and rectangles or parallelograms for faces.
prisms with rectangular faces
a polyhedron that has one polygon as a base and triangular faces that taper to a point called the vertex.
a polyhedron with six rectangular faces
(right) pentagonal prism
a polyhedron with seven faces, two of which are pentagons and five of which are rectangles
(right) triangular prism
a polyhedron with five faces, two of which are triangles and three of which are rectangles
a three-dimensional shape made up of all points that are equally distant from a point called the center
vertex (pl. vertices)
the common point of two sides of a polygon or three or more edges of a polyhedron
line of reflection
the line over which a figure is reflected or flipped. Figures can be reflected either over a horizontal ( - ) or vertical ( I ) line.
the final presentation of a figure after it has been transformed
the location of a figure on a two-dimensional space. Figures that have been translated or reflected change position. Rotated figures may or may not change position, depending on the point of rotation.
a transformation that flips a figure over a line
the mapping or movement of all the points of a figure in a plane according to a common operation. Reflections, rotations, and translations are types of transformations.
a transformation that slides each point of a figure that same distance in the same direction
rotating a figure in the direction of a clock
rotating a figure the opposite direction of a clock
point of rotation
a fixed point used in the rotation of a figure or shape. The point can be within, on, or outside of the figure being rotated.
a transformation that turns a figure about a fixed point at a given amount in a specific direction
one of the numbers in an ordered pair, such as the 2 in (2,3), that identifies its location on a coordinate graph
a pair of numbers used to describe the location of a point on a coordinate grid in relation to the origin (0,0). T
the point of intersection (0,0) for the x- and y-axes on a coordinate graph.
one of the four regions created by the intersection of the x- and y-axes at the point (0,0), known as the origin.
the horizontal number line on a coordinate graph
the vertical number line on a coordinate graph
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