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