Posted by Keira on Thursday, June 25, 2009 at 9:39am.
Length of one Total # of # of
side of pattern triangular white
(in cm) Shapes used triang
to make pattern ular
shapes
used
2 4 3
3 9 6
4 16 10
? ? ?
6 ? ?
? ? ?
? ? ?
20 ? ?
Number of gray triangular shapes used 1, 3,6,? ? ? ? ?

Math (dont want ans just help figuring this out)  Reiny, Thursday, June 25, 2009 at 10:44am
observation #1:
what happens when you square the numbers in the first column?
observation #2
in the third column:
second #  first # = ??
third #  second # = ??
observation #3
visualize billiard balls racked up
sum of balls after 1 row = 1
sum of balls after 2 rows = 3
sum of balls after 3 rows = 6
....

Math (for Reiny)  Raquel, Thursday, June 25, 2009 at 11:31am
Ok Reiny i get that i have to square the 1st row to come up with the 2nd row, but i still don't get how i come up with the 3rd row?

Math (dont want ans just help figuring this out)  Damon, Thursday, June 25, 2009 at 5:47pm
2 4 3
3 9 6
4 16 10
? ? ?
6 ? ?
? ? ?
? ? ?
20 ? ?
Third column
63 = 3
106 = 4
then
155 = 5
2115 = 6
2821 = 7
so
3
6
10
15
21
28
etc
Answer This Question
Related Questions
 Art  (this is vital. I need to pass this, its a big part of my grade and you ...
 Math (need more help Reiny)  Ok i figured out the first part that i need to ...
 art  this image was created by using basic math concepts that include all of ...
 elementary  Using each of the shapes in the box, draw a shape that is worth $6....
 Art  artists make shapes in the background smaller than shapes in the ...
 math  make AB pattern with two shapes.
 Algebra  Which of the following methods can be used to construct a pattern of ...
 Algebra 2  Which of the following methods can be used to construct a pattern of...
 Art  Artists make shapes in the background smaller than shapes in the ...
 Art  Artists make shapes in the background smaller than shapes in the ...
More Related Questions