Difference between revisions of "Construction of a triangle with two angles and included side"
Jump to navigation
Jump to search
| Line 3: | Line 3: | ||
* To understand the given angle should be included angle when two sides are given | * To understand the given angle should be included angle when two sides are given | ||
| − | ===Estimated Time | + | ===Estimated Time=== |
20 minutes | 20 minutes | ||
| + | |||
| + | {{Geogebra|dkevny6s}} | ||
| + | |||
| + | Download this geogebra file from this [https://www.geogebra.org/material/download/format/file/id/dkevny6s link]. | ||
| + | |||
| + | <span></span> | ||
=== Prerequisites/Instructions, prior preparations, if any === | === Prerequisites/Instructions, prior preparations, if any === | ||
Revision as of 08:48, 22 April 2019
Objectives
- To construct a triangle given two sides and an angles
- To understand the given angle should be included angle when two sides are given
Estimated Time
20 minutes
Download this geogebra file from this link.
Download this geogebra file from this link.
Prerequisites/Instructions, prior preparations, if any
Prior understanding of point, lines and angles, elements of triangle, properties of triangle
Materials/ Resources needed
- Digital : Computer, geogebra application, projector.
- Non digital : Worksheet and pencil
- Geogebra files : “Triangle construction (1side-2angles)”
Process (How to do the activity)
- For given 2 angles, if the angles add to 180o, can you construct the triangle?
- Is it possible to construct a triangle with only 2 given angles. What is the other parameter required for construction.
- If any one side is specified, along with 2 angles how many triangles are possible.
- If the side given is an included side, how many triangles are possible.
Evaluation at the end of the activity
- Why should the given side be included side?
- For the given A, A and S are the triangles AAS, ASA and SAA congruent triangles.