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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| A part of a line that has one end point and extends without end in one direction. | Ray
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| A figure formed by two rays or line segments with a common endpoint. | Angle
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| A straight path that goes on forever in opposite directions. | Line
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| Lines, line segments, or rays are this if they form right angles. | Perpendicular
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| The same distance apart at every point. | Parallel
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| Lines that are not parallel or perpendicular. | Oblique
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| To cut or divide by passing through or across. | Intersect
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| A tool used to measure angles. | Protractor
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| A unit for measuring angles or temperature. | Degree
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| An angle that measures 90 degrees. | Right Angle
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| An angle that is 180 degrees. | Straight Angle
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| Angles having a sum of 180 degrees. | Supplementary Angles
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| Angles having the some of 90 degrees. | Complementary Angles
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| When two angles intersect they form these angles. | Opposite Angle
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| These are pairs of opposite angles formed by intersecting lines. | Vertical Angle
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| A closed plane figure with sides made of straight line segments. | Polygon
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| Exactly the same size and shape. | Congruent
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| A triangle with at least two congruent sides. | Isosceles Triangle
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| Having all equal sides. | Equilateral Triangle
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| A triangle with no equal sides. | Scalene Triangle
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| A triangle with three acute angles. | Acute Triangle
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| A triangle with one obtuse angle. | Obtuse triangle
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| A triangle with one right angle. | Right Triangle
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| A trapezoid with one right angle. | Right Trapezoid
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| 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. | Circle
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| An angle greater than 180 degrees. | Reflex Angle
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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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