Lines and Angles

Activity No # 1

• Estimated Time - 40 minutes
• Materials/ Resources needed; Paper, pencil, and scale.
• Prerequisites/Instructions, if any:

1. The students should know points and line segments.

• Multimedia resources
• Website interactives/ links/ Geogebra Applets
• Process (How to do the activity):

1. Mark three non-collinear point P, Q and R on a paper.
2. Join these points in all possible ways. The segments are PQ, QR and RP.
3. A simple close curve formed by these three segments is called a triangle. It is named in one of the following ways.
4. Triangle PQR or Triangle PRQ or Triangle QRP or Triangle RPQ or Triangle RQP .

• Developmental Questions (What discussion questions):

1. What are plane figures ?
2. What is a polygon ?
3. How many points are needed to make a traingle ?

• Evaluation (Questions for assessment of the child):