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Before the next rules can apply, there must be two parallel lines (p & q) and a transversal (t). symbols: < angle @ congruent |
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Exterior (outside) angles are the ones above and below the
two parallel lines p and q. <1 @ <8 and <2 @ <7 |
This is a prototype of JavaSketchpad, a World-Wide-Web component of The Geometer's Sketchpad. Copyright ©1990-1998 by Key Curriculum Press, Inc. All rights reserved. Portions of this work were funded by the National Science Foundation (awards DMI 9561674 & 9623018).
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Before the next rules can apply, there must be two parallel lines (p & q) and a transversal (t). symbols: < angle @ congruent |
|
Exterior (outside) angles are the ones above and below the
two parallel lines p and q. <1 @ <8 and <2 @ <7 |
• Drag the points A, B, D, and F. • Compare the measure of the two "blue" angles. • Compare the measure of the two "red" angles. • Are there other pairs of alternate exterior angles?
Geometer's Sketchpad source: http://www.geom.umn.edu/~dwiggins/mainpage.html