# Construction of Triangles(SSS)- Activity 2

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### Objectives

### Estimated Time

### Prerequisites/Instructions, prior preparations, if any

### Materials/ Resources needed

Construction of a triangle with 3 sides.ggb

### Process (How to do the activity)

- Draw a triangle with following measures - BC = 5 cms, AC = 3 cms, AB = 7 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?

- Would it be possible to draw a triangle, if AB was changed to 9 cms? Why
- Would it be possible to draw a triangle, if AB was changed to 8 cms? Why

- What kind of triangle is it?

Draw the altitude from vertex A to segment BC. Label the intersection as D

Measure its length. Measure ∡ADB and ∡ADC.

Measure the area of the triangle ABC