A geometric pattern is made using 17 triangles and squares. If the triangles and squares have a total of 64 sides, how many triangles were used?

13 triangles were used.

Step-by-step explanation:

Each triangle has 3 sides where each square has 4 sides.

Total triangles and squares = 17

Total sides they have = 64

Let x= Number of triangles , y= Number of squares

3x = sides of all triangles , 4x = Sides of all squares.

Now,

Multiply 3 on both sides of (i) , we get

Eliminate (ii) from (ii)

x= 13

Put this in (i), we get

Hence, 13 triangles were used.

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step-by-step explanation:

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step-by-step explanation: easy math