23
2-D Shapes
1. Use the shape given by your teacher for this activity.
2. Runyourngeralongitssides.
3. Are the sides straight? __________
4. How many sides does it have? __________
5. Touch a corner where any two sides meet.
This is called a __________ .
6. A triangle has _________ sides, ________ angles and ________ vertices.
1. Tick the triangles in the following:
Properties of a triangle
Activity 1
2. Use your ruler to draw 3 triangles in the space provided.
Summary
A triangle has:
• 3 straight sides
• 3 angles
• 3 vertices
andisaclosedgure.
vertex
side
angle
Note: Plural of vertex is vertices.
Let's work out
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