Geometry Vocabulary (crossword puzzle) – Flashcards
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Line
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the set of all points collinear to two points
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Segment
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two end points and all the points in between them
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Plane
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a flat figure with no thickness that extends indefinitely in all directions
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Ray
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is a line with a single endpoint (or point of origin) that extends infinitely in one direction.
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Acute
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angle whose measure is less than 90
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Vertex
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point in common of two rays that form an angle
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Midpoint
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the middle point of the line segment
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Obtuse
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an angle whose measure is greater than 90 and less than 180
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Complementary
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the sum of two angle use measure is 90
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Supplementary
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the sum of two angle whos measure is 180
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Angle
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two non collinear rays with a common endpoint
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Perpendicular
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lines that meet at a 90
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Vertical
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Two non adjacent angles formed by two intersecting line
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Straight
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angle formed by opposite rays
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Congruent
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geometric elements of equal measure
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Quadrant
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four parts of a coordinate plane
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Coplanar
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points that lie on the same plane
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Origin
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point where the x-axis and y-axis meet in a coordinate grid
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Colinear
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points on the same line
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Adjacent
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two angles with a common side but no common interior points
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Point
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A precise location or place on a plane. Usually represented by a dot.
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Dimensions
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a property of space; extension in a given direction:
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Parallel
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coplanar lines that do not intersect or two lines that are always the same distance apart and never touch
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Quadrilateral
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a polygon with four edges (or sides) and four vertices or corners.
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Circle
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flat shape with all points the same distance from its center.
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Face
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is a flat (planar) surface that forms part of the boundary of a solid object;
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Edge
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a line segment where two faces meet.
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Solid
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3 dimensional figure
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Prism
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a solid geometric figure whose two end faces are similar, equal, and parallel rectilinear figures, and whose sides are parallelograms.
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Diameter
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any straight line segment that passes through the center of the circle and whose endpoints lie on the circle.
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Radius
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is the length of a line segment from its center to its perimeter.
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Perimeter
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The distance around a two-dimensional shape.
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Circumference
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is the distance around the circle. It is the circle's perimeter.
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Area
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The amount of space inside the boundary of a flat (2-dimensional) object.
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3D
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3 dimensions height width and length
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Sphere
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as the set of all points equidistant from a single point in space.
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Surface Area
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The total area of the surface of a three-dimensional object, measured in square units.
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Volume
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is the measure of the amount of space inside of a solid figure, it is measured in cubic units.
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Bisector
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The line that divides something into two equal parts
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Decagon
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ten-sided figure
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Symmetry
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one shape becomes exactly like another when you move it in some way: turn, flip or slide
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Polygon
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a plane figure with at least three straight sides and angles.
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intersecting
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two or more lines that meet or cross at a point
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parallelogram
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quadrilateral with two pairs of parallel sides
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Pentagon
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is a five-sided polygon
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Hexagon
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is a six-sided polygon
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Heptagon
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is a seven-sided polygon
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Octagon
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is a eight-sided polygon
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Nanogon
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is a nine-sided polygon
