Geometry Vocabulary
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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acute angle | angle measuring less than 90 degrees
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angle | two rays connected by their endpoints
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angle bisector | cuts an angle into congruent angles
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collinear points | points that lie on the same line
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congruent angles | angles that have the same measure
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congruent segments | segments that have the same length
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conjecture | conclusion reached by inductive reasoning
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coordinate | a point's distance from the origin on the number line
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coplanar | when points are on the same plane
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counterexample | something that disproves a conjecture
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inductive reasoning | reasoning based on observed patterns
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line | a series of points that extend in two directions without end
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midpoint | point that divides the segment into two congruent segments
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obtuse angle | a angle that measures above 90 degrees and less than 180 degrees
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opposite rays | rays that start at the same point but go in opposite directions
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parallel lines | lines that lie on the same plane and do not intersect
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perpendicular lines | lines that intersect from right angles
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plane | a flat surface that has no thickness
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point | has no size but has a position
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postulate | an accepted statement of fact
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ray | the part of a line consisting of one endpoint
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right angle | an angle measuring 90 degrees
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segment | the part of a line consisting of two endpoints
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skew lines | noncoplanar lines that never intersect and are not parallel
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space | the set of all points
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plane | a flat surface that has no thickness
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point | has no size but has a position
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postulate | an accepted statement of fact
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ray | the part of a line consisting of one endpoint
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right angle | an angle measuring 90 degrees
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segment | the part of a line consisting of two endpoints
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skew lines | noncoplanar lines that never intersect and are not parallel
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space | the set of all points
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
ugkakarot
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