Foundations for Geometry
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 | show 🗑
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| show | A triangle with all angles measuring less than 90 degrees.
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| show | A figure formed by two rays with a common vertex.
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| center of rotation | show 🗑
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| show | Two angles whose measures add up to 90 degrees.
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| show | Having the same size and shape.
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| show | The relationship between two or more objects that are matched.
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| show | A triangle with three congruent sides.
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| image | show 🗑
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| isosceles triangle | show 🗑
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| show | A straight path that extends without end in opposite directions.
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| line of symmetry | show 🗑
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| line symmetry | show 🗑
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| obtuse angle | show 🗑
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| obtuse triangle | show 🗑
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| parallel lines | show 🗑
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| parallelogram | show 🗑
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| show | Lines that intersect to form right angles.
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| plane | show 🗑
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| show | An exact location in space.
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| show | A close plane figure formed by three or more line segments that intersect only at their endpoints.
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| ray | show 🗑
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| rectangle | show 🗑
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| show | A transformation of a figure that flips the figure across a line.
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| show | A polygon with congruent sides and angles.
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| show | A regular polygon is repeated to fill a plane.
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| show | A parallelogram with all sides congruent.
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| right angle | show 🗑
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| right triangle | show 🗑
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| rise | show 🗑
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| show | A transformation in which a figure is turned around a point.
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| rotational symmetry | show 🗑
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| show | The horizontal change when,the slope of a line is expressed as the ratio rise/run, or "rise over run".
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| scalene triangle | show 🗑
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| show | A part of a line between two endpoints.
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| show | A measure of the steepness of a line on a graph; the rise divided by the run.
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| show | A rectangle with four congruent sides.
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| supplementary angles | show 🗑
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| show | A repeating pattern of plane figures that completely cover a plane with no gaps or overlaps.
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| show | A change in the size or position of a figure.
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| show | A movement (slide) of a figure along a straight line.
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| show | A line that intersects two or more lines.
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| show | A quadrilateral with exactly one pair of parallel sides.
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| show | The measures of the angles in a triangle add up to 180 degrees.
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| show | A pair of opposite congruent angles formed by intersecting lines.
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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.
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.
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:
bookannelid
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