grade six math
posted by marie .
Draw an equilateral triangle. Divide each side in half and join the points to make four small equilateral triangles. Rearrange these four equilateral triangles into a parallelogram. Compare the perimeter of the original triangle with the perimeter of the parallelogram. Explain your results.
let the sides of the original be 2x
then each side of the 4 smaller trianges is x
Perimeter of original is 2x+2x+2x= 6x
Sum of all sides of the parallelogram = 6x
Not much to explain here, after you make the sketch just add up the sides to get the perimeter .
in how many ways can you arrange six things