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You can form a triangle with 21 dots, starting with 6 dots at the bottom, reducing 1 dot as you go higher, till you have just I dot on top.
o
o o
o o o
o o o o
o o o o o
o o o o o o
Or you can start with 1 dot on top, and keep increasing 1 dot in the next line as you go down.
1. Can you tell how many dots you need to make an 8 - decker triangle with dots?
Try this
Make grids using dots. Then draw funny figures.
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