Oppervlakte parallellogram en driehoek
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Area of Parallelograms
Drag the red point to change the shape of the parallelogram.[br][b]Is the area of the parallelogram always equal to that of the rectangle? What is the area of the parallelogram?[/b][br]Check the "Dissect" box to explore.
Anthony Or. GeoGebra Institute of Hong Kong.
Circumference of Circles
(See http://www.geogebratube.org/material/show/id/8222 for anothernew version.)[br][br]Drag the green point to appropriate position to measure the diameter of the circle.[br]Drag the red point P to straighten the circumference. Divide the scale of the ruler to measure its length to [b]two decimal places[/b]. Use the Zoom In, Zoom Out and Move tools if necessary.[br][br]Calculate the values of c/d. What do you discover?
Circumference of Circles
Anthony OR. GeoGebra Institute of Hong Kong.
Area of Circles (adaptation)
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Adapted from original applet by Anthony Or, Education Bureau, Hong Kong. (Thank you, Anthony Or!) |
Cirkels oefenen
7 types opgaven met cirkelomtrek en -oppervlakte oefenen.