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# Textbook

## Useful websites

1. This website gives basic ideas of constructing triangleswww.cimt.plymouth.ac.uk

This video gives information on construction of triangles.

The below video gives more information about construction of trangles by Gireesh K S and Suchetha S S

```==Reference Books==
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# Teaching Outlines

## Concept - 1: Introduction

### Notes for teachers

These are short notes that the teacher wants to share about the concept, any locally relevant information, specific instructions on what kind of methodology used and common misconceptions/mistakes.

### Activity

1. Activity No #1 - Introduction to Construction Of Triangles click here

### Activity

1. Activity No 2 - Introduction to uses of geometrical instrument click here

## Concept- 2: Construction of Triangles

### Notes for teachers

These are short notes that the teacher wants to share about the concept, any locally relevant information, specific instructions on what kind of methodology used and common misconceptions/mistakes.

### Activity 2

Drawing a triangle when measures of three sides are given? Click Here

### Activity 3

Drawing a triangle when measures of two sides and one angle are given? Click Here

### Activity 3a

Construction of triangle with 2 sides and an angle SSA - conceptual error Click Here

### Activity 4

Draw  a triangle when measures of two angles and one side are given? Click Here

### Activity No #

• Estimated Time
• Materials/ Resources needed
• Prerequisites/Instructions, if any
• Multimedia resources
• Website interactives/ links/ Geogebra Applets
• Process (How to do the activity)
• Developmental Questions (What discussion questions)
• Evaluation (Questions for assessment of the child)
• Question Corner