# Difference between revisions of "Construction of Triangles(SAS)- Activity 3a"

From Karnataka Open Educational Resources

m (added Category:Triangles using HotCat) |
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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 05:01, 2 December 2019

## Contents

### 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)