| Tool: Euclid's Elements, Book I, Proposition 28 - Transveral of Parallel Lines 2 |
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| Go to: | http://aleph0.clarku.edu/~djoyce/java/elements/bookI/propI28.html (opens a new window) | ||
| Description: | Euclid's proposition states that when a straight line intersects two other lines and the exterior angle is equal to the interior and opposite angles, then the two lines crossed are parallel. Also if the two interior angles on the same side sum to the measure of two right angles, then the two crossed lines are parallel. The guide then examines the structure of the proposition. To reset the applet, press "r" while your cursor is over the diagram. | ||
| Technology Type: | Java Applet | ||
| Guide: | User's Guide (opens a new window) | ||
| Author: | David E. Joyce | ||
| Language: | English | ||
| Cost: | Does not require payment for use | ||
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| Courses: | Geometry | Parallel, Alternate interior angles, Alternate exterior angles | |
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