# Construction of Triangles(ASA)- Activity 4

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### Objectives

### Estimated Time

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

### Materials/ Resources needed

**Construction of triangle with 1 side and two angles.ggb**

### Process (How to do the activity)

**with following measures - BC = 12 cms, ∡B = 60, ∡C = 60, (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?

- Can this triangle be an obtuse angled triangle?

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