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1. Nine points are arranged in a 3 x 3 grid, as shown below.  In how many different ways can you choose three points, so that they form a triangle?

 

 

2. A right isosceles triangle has a perimeter of 1.  What is the area of the triangle?

 Oct 4, 2021
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1. There are 40 ways of drawing a triangle.

 Oct 4, 2021

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