Polygons and Quadrilaterals vocabulary (Geometry - Mrs. Davis)
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 less than ninety degrees
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| acute triangle | triangle with all angles less than ninety degrees
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| angle | two rays with a common endpoint
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| complementary | adjective describing two angles whose sum is ninety degrees
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| congruent | adjective describing figures with the same shape and size
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| decagon | ten-sided polygon
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| degree | unit of measure for angles (the most common)
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| dilation | a type of transformation: the process of reducing or enlarging a figure
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| inductive reasoning | a rule based on a pattern of several examples
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| deductive reasoning | reasoning in which the conclusion is reached from previously known facts
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| equilateral | all sides of a figure are congruent
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| heptagon | seven-sided polygon
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| hexagon | six-sided polygon
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| indirect measurement | Indirect measurement is a technique that uses proportions to find a measurement when direct measurement is not possible.
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| inscribed polygon | a polygon whose vertices rest on the circle
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| isosceles | adjective for a polygon with two congruent sides
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| line of symmetry | the fold line between two halves that mirror each other
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| line symmetry | figures that match exactly when folded in half have line symmetry
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| nonagon | nine-sided polygon
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| obtuse angle | an angle measuring more than ninety degrees but less than 180 degrees
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| obtuse triangle | a triangle containing one obtuse angle
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| octagon | eight-sided polygon
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| pentagon | five-sided polygon
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| polygon | a simple closed figure formed by three or more line segments
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| simple | adjective meaning that line segments do not cross each other
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| protractor | a tool used to measure angles
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| quadrilateral | four-sided polygon
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| reflection | a mirror image of a figure across a line of symmetry
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| regular polygon | a polygon with all sides congruent and all angles congruent
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| rhombus | an equilateral quadrilateral
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| right angle | an angle measuring exactly ninety degrees
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| right triangle | a triangle containing a ninety degree angle
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| scalene | adjective for a triangle with three unequal sides
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| similar | adjective for polygons having corresponding angles congruent and corresponding sides in porportion
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| straight angle | angle containing 180 degrees
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| supplementary | adjective for two angles whose sum is exactly 180 degrees.
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| tessellation | a repetitive pattern of polygons that fit together with no overlaps or gaps
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| transversal | a line that intersects parallel lines
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| trapezoid | a quadrilateral with exactly one pair of parallel sides
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| triangle | a three-sided polygon
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| vertex | the common endpoint where line segments or rays meet forming an angle
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| translation | one type of transformation where a figure is slid vertically, horizontally, or both
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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:
DDavis
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