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solid figure-a figure that has length, width, and height |
rectangular prism- a solid figure with faces that are rectangles |
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cube- a solid figure with six faces that are congruent squares |
pyramid- a solid figure whose base is a polygon and whose faces are triangles with a common point |
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cylinder- a solid figure with two congruent circles as bases |
cone- a solid figure with a circle as its base and a curved surface that meets at a point |
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sphere- a solid figure in the shape of a ball |
face- a flat surface of a solid that does not roll |
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edge- a line segment where two faces of a solid figure meet |
vertex- the point where two rays meet to form an angle. The points where the sides of a polygon meet. The points where 3 or more edgesmeet in a solid figure that does not roll. The pointed part of a cone. |
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vertices- The points where the sides of a polygon meet. The points where 3 or more edges meet in a solid figure that does not roll. The pointed part of a cone. |
point- an exact position often marked by a dot |
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line- a straight path of points that is endless in both directions |
triangle- a polygon with 3 sides |
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polygon- a closed figure made up of straight line segments |
side- a line segment forming part of a polygon |
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ray- a part of a line that has one endpoint and continues endlessly in one direction |
angle- a figure formed by two rays that have the same endpoint |
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right angle- an angle that forms a square corner |
octagon- a polygon with 8 sides |
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lines- more than one straight path of points that is endless in both directions |
acute angle- an angle that is open less than a right angle |
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obtuse angle- an angle that is open more than a right angle |
parallel lines- lines that never intersect |
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line segment- a part of a line that has two endpoints |
quadrilateral- a polygon with 4 sides |
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pentagon- a polygon with 5 sides |
hexagon- a polygon with 6 sides |
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intersecting lines- lines that cross at one point |
decagon-a polygon with ten sides |
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perpendicular lines- two lines that intersect to form right angles |
equilateral triangle- a triangle with all sides the same length |
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isosceles triangle- a triangle with at least two sides the same length |
scalene triangle- a triangle with no sides the same length |
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right triangle- a triangle with one right angle |
acute triangle- a triangle with three acute triangles |
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obtuse triangle- a triangle with one obtuse angle |
trapezoid- a quadrilateral with only one pair of parallel sides |
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parallelogram- a quadrilateral in which opposite sides are parallel |
rectangle- a quadrilateral with four right angles |
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rhombus- a quadrilateral with opposite sides parallel and all sides the same length |
square- a quadrilateral with four right angles and all sides the same length. |
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congruent- the same size and shape |
flip/reflection- the change in the position that picks up and moves to give a mirror image |
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slide/translation- the change in the position of a figure that moves it up, down, or sideways |
turn/rotation- the change in the position of a figure that moves it around a point |
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line of symmetry- a line on which a figure can be folded so that both parts match exactly |
symmetric figure- a figure that has at least one line of symmetry |
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perimeter-the distance around a figure |
area-the number of square ubits needed to cover a region |
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square unit-a square with sides 1 unit long, used to measure area |
volume-the number of cubic units needed to fill a solid figure |
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tessellation-a pattern made of identical shapes |
cubic unit-a cube with edges 1 unit long, used to measure volume |
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