EMAT 6700

by Brad Simmons

How Many Triangles?

Use geometer's sketchpad to help determine the number of triangles in each figure.

How many triangles in each figure?

                                1.

Solution:

There are 8 triangles in the figure above.

Here are four ...  two are white and two are black.

Here are two more ... one white and one black.

Here are the other two ... one white and one black.

Please click here for a geometer's sketchpad sketch of the figure above.

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