Watch Video on Similar Triangles - Geometry Help
Thursday, September 10th, 2009
Access full lesson containing this video at: http://www.yourteacher.com/geometry/similartriangle.php Students learn that similar polygons have the same shape, and if two polygons are similar, then the corresponding angles are congruent, and the corresponding sides are in proportion. Students also learn that the scale factor is ratio of the lengths of two corresponding sides. Students are then asked to use these concepts to find missing angle measures and missing side lengths in similar figures.
Duration : 0:3:0
41-45, polygons, exterior angles
What an angle is. Angles in a circle. Complementary and supplementary angles.