logging in or signing up Angles formed by Parallel lines girishsir Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 3458 Category: Education License: All Rights Reserved Like it (4) Dislike it (0) Added: June 11, 2010 This Presentation is Public Favorites: 2 Presentation Description Three main types of angles are formed by parallel lines - 1. Corresponding angles 2. Alternate angles and 3. Interior angles Here it is explained how to Identify these three types of angles Comments Posting comment... Premium member Presentation Transcript Slide 1: PARALLEL LINES 6/11/2010 MATH GIRISH RAO If two lines are drawn in a plane such that they do not intersect, even when extended indefinitely in both directions, then such lines are called as parallel lines. A line which intersects two distinct lines in a plane in exactly two points is called a transversal. Slide 2: When a transversal intersect two parallel lines, we get following types of angles Corresponding Angles Alternate Angles Co – interior angles Linear pair of Angles (Adjacent Angles) Vertically opposite Angles Out of the five types, let us see angles of first three types 6/11/2010 MATH GIRISH RAO Slide 3: 6/11/2010 MATH GIRISH RAO Corresponding angles They are “F” shaped angles. Slide 4: 6/11/2010 MATH GIRISH RAO Slide 5: 6/11/2010 MATH GIRISH RAO Slide 6: 6/11/2010 MATH GIRISH RAO Slide 7: When a pair of parallel lines are intersected by the transversal we get four pairs of Corresponding angles as shown in the figure Corresponding angles have same measure 6/11/2010 MATH GIRISH RAO Slide 8: 6/11/2010 MATH GIRISH RAO Alternate angles. They are “Z” shaped angles Slide 9: 6/11/2010 MATH GIRISH RAO Slide 10: 6/11/2010 MATH GIRISH RAO When a pair of parallel lines are intersected by the transversal we get two pairs of interior Alternate angles as shown in the figure Alternate angles have same measure Slide 11: 6/11/2010 MATH GIRISH RAO Co – interior angles. This are “ [ “ shaped angles Slide 12: 6/11/2010 MATH GIRISH RAO Slide 13: 6/11/2010 MATH GIRISH RAO When a pair of parallel lines are intersected by the transversal we get two pairs of interior co – Interior angles as shown in the figure. The sum of co-interior angles is always 1800 You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.