Changes
From Karnataka Open Educational Resources
1,204 bytes removed
, 10:14, 11 April 2019
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| | === Activity No # 1 : Formation of a triangle === | | === Activity No # 1 : Formation of a triangle === |
| | [[File:Triangle formation.png|thumb|Formation of a triangle]] | | [[File:Triangle formation.png|thumb|Formation of a triangle]] |
| − | * '''Objectives''' | + | * |
| − | # Understand formation of triangles
| + | |
| − | # Recognize elements of triangle
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| − | # Introduce concepts of exterior angle.
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| − | * '''Pre-requisites'''
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| − | # Prior knowledge of point, lines, angles, parallel linesResources needed
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| − | * '''Resources needed'''
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| − | # Digital : Computer, geogebra application, projector.
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| − | # Non digital : Worksheet and pencil
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| − | # Geogebra files : '''“[https://www.geogebra.org/m/bwsvgqqg#material/z4h42k8z Introduction to a triangle.ggb]”'''
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| − | * '''How to do'''
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| − | # Use the geogebra file to illustrate.
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| − | # How many lines are there? Are the lines meeting?
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| − | # Are the two lines parallel? How can you say they are parallel or not?
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| − | # How many angles are formed at the point of intersection?
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| − | # What is the measure of the total angle at the point of intersection of two lines?
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| − | # Of the four angles formed which of the angles are equal? What are they called?
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| − | # Do the three intersecting lines enclose a space? How does it look? It is called a triangle.
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| − | # What are the points of intersection of these three lines called?
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| − | # The line segments forming the triangle are called sides.
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| − | # How many angles are formed when three lines intersect with each other?
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| − | # How many angles are enclosed by the triangle?
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| | * '''Evaluation at the end of the activity''' | | * '''Evaluation at the end of the activity''' |
| | # Can there be a closed figure with less than three sides? | | # Can there be a closed figure with less than three sides? |
