Quadrilaterals, Polygons
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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Square | 4 right angles 4 equal sides
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Quadrilateral | just 4 sides - no assumptions about angles or sides
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Rhombus | 4 equal sides
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Rectangle | 4 right angles
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Parallelogram | opposite sides parallel opposite sides congruent
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Trapezoid | exactly one pair of parallel sides
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Sum of the angles of a quadrilateral | 360
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Pentagon | 5 sides
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Hexagon | 6 sides
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Heptagon | 7 sides
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Octagon | 8 sides
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Nonagon | 9 sides
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Decagon | 10 sides
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Sum of the measures of the angles of a polygon with n sides | (n-2)180
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Sum of the measures of the exterior angles of any polygon | 360
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Complementary angles | add to 90
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Supplementary angles | add to 180
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Vertical angles | opposite; always congruent
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Area of a parallelogram | A = bh
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Area of a triangle | A = 1/2 bh
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Area of a trapezoid | A = 1/2 (b1+b2)h
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Area of a circle | A = π times the radius squared
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Circumference of a circle | C = πd or C = 2πr
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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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Created by:
nhartfield
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