Geometry Vocaulary
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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| line | a set of points that continue in both directions without end
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| line segment | part of a line with two endpoints
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| ray | part of a line that has one endpoint and continues in the other direction without end
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| point | an exact location in space; has no size
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| parallel lines | lines that never intersect
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| intersecting lines | lines that cross
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| perpendicular lines | lines that intersect at 90 degree angles
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| angle | 2 rays with a common endpoint
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| acute angle | an angle that is less than 90 degrees
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| right angle | an angle that is exactly 90 degrees
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| straight angle | an angle that measures 180 degrees
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| 360 degrees | the number of degrees in a circle
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| obtuse angle | an angle that measures greater than 90 degrees but less than 180 degrees
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| circle | a set of points that are equidistant (the same distance) from a common point called the center; named by its center point
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| chord | a line segment in a circle with both endpoints on the circle
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| diameter | a line segment in the circle with both endpoints on the circle, and it passes through the center
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| radius (radii - plural) | a line segment in a circle with one endpoint on the circle and one endpoint on the center (1/2 the diameter)
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| polygon | a closed figure made of line segments that do not intersect
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| triangle | three-sided polygon
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| obtuse triangle | triangle with 1 obtuse angles and 2 acute angles
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| acute triangle | triangle with 3 acute angles
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| right triangle | triangle with 1 right angle and 2 acute angles
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| equilateral triangle | triangle with 3 congruent sides
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| congruent | exact same size and shape
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| scalene triangle | triangle with no congruent sides
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| isosceles triangle | triangle with at least 2 congruent sides
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| quadrilateral | four-sided polygon
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| parallelogram | a quadrilateral with 2 pairs of parallel sides
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| rhombus | a parallelogram with 4 congruent sides
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| rectangle | a parallelogram with 4 right angles
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| square | a parallelogram with 4 congruent sides and 4 right angles
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| trapezoid | a quadrilateral with only one pair of parallel sides
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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:
dgiordano
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