Area of Parallelograms and Triangles
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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| base of a parallelogram | any side of a parallelogram
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| height of a parallelogram | perpendicular distance between any two parallel bases
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| base of a triangle | any side
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| height of a triangle | the length of an altitude drawn to a given base
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| height of a trapezoid | perpendicular distance between its bases
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| sector of a circle | region of a circle bounded by a central angle and its intercepted arc. The formula for the area of a sector is similar to the formula for arc length.
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| segment of a circle | region bounded by an arc and a chord.
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| center of a regular polygon | center of its circumscribed circle
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| radius of a regular polygon | radius of its circumscribed circle
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| apothem | a segment drawn from the center of a regular polygon perpendicular to a side of the polygon. Its length is the height of an isosceles triangle that has two radii as legs.
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| central angle of a regular polygon | has its vertex at the center of the polygon and its sides pass through consecutive vertices of the polygon.
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| composite figure | figure that can be separated into regions that are basic figures, such as triangles, rectangles, trapezoids, and circles. To find the area of a composite figure, find the area of each basic figure and then use the Area Addition Postulate.
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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.
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Created by:
amgeometry
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