terms used for topic 9 envision math book
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| a two dimensional surface made up of points | plane
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| a path of points that goes on forever in two directions | line
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| an exact location in a space | point
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| lines that never intersect | parallel lines
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| lines that pass through the same point | intersecting lines
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| lines that form square corners | perpendicular lines
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| a part of a line with two endpoints | line segment
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| is a part of a line that has one endpoint and continues on forever in one direction | ray
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| a figure formed by two rays that have the same endpoint | angle
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| is a square corner | right angle
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| is less than a right angle | acute angle
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| is greater than a right angle | obtuse angle
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| forms a straight line | straight angle
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| is a closed plane figure made up of line segments. | polygon
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| the point where two sides meet | vertex
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| 3 sided polygon | triangle
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| 5 sided polygon | pentagon
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| 4 sided polygon | quadrilateral
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| 8 sided polygon | octagon
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| triangle with 3 equal sides | equilateral triangle
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| triangle with 2 equal sides | isosceles triangle
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| triangle with 0 equal sides | scalene triangle
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| triangle has one right angle | right triangle
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| triangle has three acute angles | acute triangle
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| triangle has one obtuse angle | obtuse triangle
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| a quadrilateral that has opposite sides that are parallel and all of its sides are the same length. | rhombus
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| a quadrilateral with only one par of parallel sides. | trapezoid
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| q quadrilateral that has 2 pairs of parallel sides. | a parallelogram
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| A quadrilateral that has 4 right angles. It is also a parallelogram. | a rectangle
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| A quadrilateral that has 4 right angles and all sides are the same length. It is also a parallelogram, rectangle, and rhombus. | a square
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