WBSED - 5 - Maths :: Play with three lines
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[Contributor - Nupur Nagar]
Objective: To introduce the concept of triangle and various types of triangles based on side length and angles.
Subtopics to be covered:
- Definition and construction of triangle
- Types of triangle based on side length
- Types of triangle based on angle
Learning Outcome:
- Student can identify different kinds of triangles they observe in their surroundings
- They also learn to construct triangles using scale and protractor
[Contributor - Rini Jose]
[Contributor - Kripa S]
https://www.youtube.com/watch?v=dybHQbZGCGQ&list=PLD431F45D48950EE3&index=4 (angles forrmed by parallel lines and transversal)
https://www.youtube.com/watch?v=e3NAeXaq-LI&list=PLD431F45D48950EE3&index=5 (angles of parallel lines 2)
[Contributor - Kripa S]
https://static.studyladder.com/cdn/course/19/ce6062a85a2e.jpg (types of lines)
http://study.com/cimages/multimages/16/line_vs._line_segment_.png (line vs line segment)
https://www.skillsyouneed.com/images/geo/corresponding-angle.png (angles made by transversal)
https://i.ytimg.com/vi/NxIRHn7tR7I/hqdefault.jpg (corresponding angles)
[Contributor - Kripa S]
Take a ruled sheet of paper. Draw (in thick colour) two parallel lines l and m. Draw a transversal t to the lines l and m. Place a tracing paper over the figure drawn. Trace the lines l, m and t. Slide the tracing paper along t, until l coincides with m. You find that angle '1' on the traced figure coincides with angle '2' of the original figure. Observe and see if there are any other angles that are coinciding
[Contributor - Rima Mitra]
https://drive.google.com/open?id=0BzNF2YyqQxJ-akNpakZ0RHgwRUE
[Contributor - Rima Mitra]
https://drive.google.com/open?id=0BzNF2YyqQxJ-VDlqTDNXYTEyZlE
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