morgan's geometry vocabulary & things
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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| point | an exact location on a plane surface
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| line | goes on forever in both directions, 180 degrees
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| line segment | a section of a line with two end points
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| ray | goes on forever in one direction, has one end point
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| parallel lines | lines that are the same distance apart and they will never intersect
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| perpendicular lines | 2 lines that intersect and form 4 right angles
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| angles | geometric shapes that are formed wherever 2 rays share a common end point
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| right angle | exactly 90 degrees
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| acute angle | smaller than a right angle
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| obtuse angle | larger than a right angle, smaller than a line
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| strait angle | exactly 180 degrees
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| congruent | figures that have the same shape and size, all sides and angles are equal
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| polygon | a closed figure made of line segments
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| quadrilateral | four sided polygon, includes : rectangle, square, rhombus, parallelogram, and trapezoid
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| rhombus | a parallelogram with four equal sides
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| square | a parallelogram with four equal sides and four right angles
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| rectangle | 4 sides, 4 right angles, opposite sides are equal and parallel
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| trapezoid | 4 sided figure, exactly one pair of parallel lines
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| pentagon | 5 sided polygon
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| hexagon | 6 sided polygon
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| heptagon | 7 sided polygon
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| octagon | 8 sided polygon
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| decagon | 10 sided polygon
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| line of symmetry | a line that divides a figure into 2 mirror images
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| vertex or vertices | a point were line segments meet, it is called vertices when there are more than one point
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| right triangle | a right triangle has exactly one right angle
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| acute triangle | acute triangles have 3 acute angles
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| obtuse triangle | an obtuse triangle has exactly one obtuse angle
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Created by:
Sydmcmillan03
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