Difference between revisions of "Construction of Triangles(SAS)- Activity 3a"
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=== Materials/ Resources needed === | === Materials/ Resources needed === | ||
| + | [[:File:2A.Construction of triangle with 2 sides and an angle SSA - conceptual error .ggb|Construction of triangle with 2 sides and an angle SSA - conceptual error .ggb]] | ||
=== Process (How to do the activity) === | === Process (How to do the activity) === | ||
| + | # Draw a triangle with following measures - AB = 8 cms, ∡CAB = 40, BC = 6 cms (BC as the base) | ||
| + | ‘Play’ the construction protocol navigator to understand the construction, after students have constructed on their own | ||
| + | ## What kind of triangle is it? | ||
| + | ### What kind of triangle is it - by sides? | ||
| + | ### What kind of triangle is it - by angles? | ||
| + | ## The circle drawn from point B, intersect RAY AC in a second point ‘E’.Will Triangle ABE fulfil the requirements of the construction? What can you infer from this construction specifications. | ||
| + | (Hint – if a set of specifications can allow us to draw more than one triangle, then it is not a unique specification). | ||
| + | |||
| + | The specification in this example is ASS (Angle -side – side) and not SAS (Side – angle - side) | ||
=== Evaluation at the end of the activity === | === Evaluation at the end of the activity === | ||
[[Category:Triangles]] | [[Category:Triangles]] | ||
Latest revision as of 10:31, 2 December 2019
Objectives
Estimated Time
Prerequisites/Instructions, prior preparations, if any
Materials/ Resources needed
Construction of triangle with 2 sides and an angle SSA - conceptual error .ggb
Process (How to do the activity)
- Draw a triangle with following measures - AB = 8 cms, ∡CAB = 40, BC = 6 cms (BC as the base)
‘Play’ the construction protocol navigator to understand the construction, after students have constructed on their own
- What kind of triangle is it?
- What kind of triangle is it - by sides?
- What kind of triangle is it - by angles?
- The circle drawn from point B, intersect RAY AC in a second point ‘E’.Will Triangle ABE fulfil the requirements of the construction? What can you infer from this construction specifications.
- What kind of triangle is it?
(Hint – if a set of specifications can allow us to draw more than one triangle, then it is not a unique specification).
The specification in this example is ASS (Angle -side – side) and not SAS (Side – angle - side)