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| + | This activity explores formation of a quadrilateral and elements related with the shape. |
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| === Objectives === | | === Objectives === |
| * To make quadrilateral | | * To make quadrilateral |
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| * Digital : Computer, geogebra application, projector. | | * Digital : Computer, geogebra application, projector. |
| * Non digital : worksheet and pencil. | | * Non digital : worksheet and pencil. |
− | * Geogebra files : '[https://ggbm.at/hy2gd2v8 Introduction to quadrilaterals.ggb]' | + | * Geogebra files : [https://ggbm.at/uwbbeyve 'Introduction to quadrilaterals.ggb]' |
| + | {{Geogebra|uwbbeyve}} |
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| ===Process (How to do the activity)=== | | ===Process (How to do the activity)=== |
− | * What is a quadrilateral? How many line segments are required for a quadrilateral. How many vertices in a quadrilateral? How many interior angles ? | + | * What is a quadrilateral? How many line segments are required for a quadrilateral. What are these line segments called? |
| + | * How many vertices in a quadrilateral? How many interior angles ? |
| * How many lines can be drawn such that they join opposite vertices in a quadrilateral?What are these lines called? | | * How many lines can be drawn such that they join opposite vertices in a quadrilateral?What are these lines called? |
− | * Diagonals divide the quadrilateral into which shape? How many triangles are formed?
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| * Do the two lines intersect with each other? At the point of intersection how many angles are formed?Do you notice any equal angles? What kinds of angle pairs are formed at the point of intersection? | | * Do the two lines intersect with each other? At the point of intersection how many angles are formed?Do you notice any equal angles? What kinds of angle pairs are formed at the point of intersection? |
− | * Note the angle measures at the diagonals. Calculate the sum of these angles. Analyze the sum of angles measure at the point of intersection. | + | * What is the measure of the total angle at the point of intersection of diagonals? |
− | * Draw different quadrilaterals and to measure the angles at the point of intersection,calculate the sum of these angles. | + | '''Evaluation at the end of the activity''' |
− | {| class="wikitable"
| + | * Can the vertices of a quadrilateral be anywhere on a plane? |
− | |Quadrilateral
| + | * Can the vertices of a quadrilateral lie on a straight line? |
− | |Side1
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− | |Side2
| + | [[Category:Quadrilaterals]] |
− | |Side3
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− | |Side4
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− | |Angle1
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− | |Angle2
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− | |Angle3
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− | |Angle4
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− | |Angle 1+Angle 2+ Angle3 + Angle 4
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− | |What do you observe about angles around diagonal
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− | |Q 1
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− | |Q 2
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− | |Q 3
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− | |Q 4
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− | |}
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