Lines, rays, points
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 | An angle that measures less than 90 degrees.
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| Obtuse Angle | An angle that measures more than 90 degrees but less than 180 degrees.
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| Right Angle | An angle that measures exactly 90 degrees.
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| Straight Angle | An angle that measures exactly 180 degrees. A straight line.
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| Complementary angles | Two angles that together equal 90 degrees (right angle). They also share a vertez and a ray.
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| Supplementary angles | Two angles that share a vertex and a ray; together they form a straight angle (180 degrees).
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| Point | An exact location in space, usually represented by a dot.
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| Line | A straight path in space, extending in both directions with no endpoint.
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| Ray | A part of a line, it hegins at an endpoint and extends forever in one direction.
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| Intersecting lines | Lines that cross each other at exactly one point.
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| Parallel lines | Lines in a plane that will never intersect.
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| Perpendicular lines | Two lines that intersect to form right angles.
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| Vertex | The point where two rays join to form an angle.
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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:
trockwell
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