Classifying Quadrilaterals | MathHelp.com - By MathHelp.com
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| 00:0-1 | here were asked to classify each of the following quadri | |
| 00:03 | laterals . Remember that a quadrilateral is a four sided | |
| 00:07 | polygon . The first way to classify a quadrilateral is | |
| 00:11 | to determine if it has any pairs of parallel sides | |
| 00:15 | . For example the first quadrilateral shown has no pairs | |
| 00:20 | of parallel sides . So we say it's simply a | |
| 00:23 | quadrilateral . Yeah the next quadrilateral has one pair of | |
| 00:37 | parallel sides . A quadrilateral with exactly one pair of | |
| 00:42 | parallel sides is called a trapezoid . Yeah . Yes | |
| 00:54 | . Remember that in this lesson if two sides look | |
| 00:57 | like they're parallel we can assume that they are parallel | |
| 01:01 | . Finally we can see that the last quadrilateral has | |
| 01:04 | two pairs of parallel sides . A quadrilateral with two | |
| 01:09 | pairs of parallel sides is called a parallelogram . Yeah | |
| 01:17 | . Yeah . Yeah . |
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