Make a triangular pyramid.
Make a cross from 2 sticks. Put a square around it using the other 4 sticks. Note that the ends of the sticks for the square will extend beyond the square The 4 triangles are in the middle, pointing inwards. .. | | . .------ . .. |\/| . .. |/\| . .------- . .. | | .
If you have sticks which measure 1, 2, 3, 4, 5, 6, 7, 8 and 9 cm (one of each). How many different triangles can you make using three of the sticks?
Rohit has 6 wooden sticks of equal length. He wants to join all of them in such a way that they make a regular polygon. At what internal angle he has to join wooden stick with each other?
How many more triangles in the given figure must be shaded to make the fraction of unshaded part equal to 5/8?
