Two coins at each vertex.
Carefully arrange 12 rows with 8 coins in each row.
Two coins stacked on top of each other on each corner (total of 8) and one coin in between the corner stacks to complete each side (4 more) for a total of twelve coins.
You, can't.
16 is a perfect square because you can arrange exactly 16 balls or matches or circles in a square with equal sides. Refer to the diagram below.* * * ** * * ** * * ** * * *See the sides. There are exactly 4 stars on each of the sides. 4 x 4 = 16. That is how you can tell if something is a square number. 1 x 1 = 1. 2 x 2 = 4 and so on. Any number which you can arrange into a perfect square is a square number. That is why they are called square numbers int eh first place.
Draw a regular five-pointed star. Place a coin at each of the points and each of the intersections.
Arrange them in the shape of a square with 4 on the left, 4 on the right, 4 across the top, and 4 across the bottom. The coin in each corner counts as a member of two edges. Each edge has 4 coins in it, and there are a total of 12 coins all around the square.
Carefully arrange 12 rows with 8 coins in each row.
oooo arrange them in a triangle shape, four coins each side. o o oo o
Two coins stacked on top of each other on each corner (total of 8) and one coin in between the corner stacks to complete each side (4 more) for a total of twelve coins.
You, can't.
Form a triangle with the six coins. Now you have 3 rows with 3 coins in each row!
16 is a perfect square because you can arrange exactly 16 balls or matches or circles in a square with equal sides. Refer to the diagram below.* * * ** * * ** * * ** * * *See the sides. There are exactly 4 stars on each of the sides. 4 x 4 = 16. That is how you can tell if something is a square number. 1 x 1 = 1. 2 x 2 = 4 and so on. Any number which you can arrange into a perfect square is a square number. That is why they are called square numbers int eh first place.
To place 10 coins in 5 straight lines with 4 coins on each line, you can arrange them in a pattern where each line intersects with the others. One way to achieve this is by placing 4 coins in a square formation, then placing 3 coins in a straight line across the middle of the square, and finally placing the last 3 coins in a straight line perpendicular to the middle line. This arrangement creates 5 straight lines, each containing 4 coins.
Draw a regular five-pointed star. Place a coin at each of the points and each of the intersections.
draw 9 lines and join them
The sides are 6.25 each.
In a square adjacent sides are perpendicular to each other and opposite sides are parallel to each other.