circles lines and angles
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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| ray | a part of a line that has one endpoint and extends without end in one direction
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| angle | a figure formed by two rays or line segments with a common endpoint
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| line | a straight path that goes on forever in opposite directions
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| perpendicular | lines,line segments,or rays are perpendicular if they form right angles
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| parallel | the same distance apart at every point
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| oblique | lines that are not parallel or perpendicular
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| intersect | to cut or divide by passing through or across
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| protractor | a tool used to measure angles
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| degree | a unit for measuring angles and temperature
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| right angle | an angle that measures 90 degrees
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| straight angle | an of 180 degrees
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| supplementary angle | angles having a sum of 180 degrees
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| complementary angles | angles having a sum of 90 degrees
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| opposite angle | when two lines intersect the angles formed are opposite angles
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| vertical angle | pairs of opposite angles formed by intersecting lines
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| polygon | a closed plane figure with sides made of straight line segments
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| congruent | exactly the same size and shape
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| isosceles triangle | a triangle with at least two congruent sides
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| equilateral triagle | a triangle with all equal sides
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| scalene triangle | a triangle with no equal sides
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| acute triagle | a triangle with three acute angles
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| obtuse triangle |
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| right triagle |
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| right trapezoid |
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| circle | a plane figure that forms a closed path so that all the points on the path are the same distance from a point called the center
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| reflex angle | an angle greater than 180 degrees
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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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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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