You could break one in half, making two out of one and then those "2" plus the other 8 equals ten.
You make the number "10" with the 9 toothpicks or spell out "ten" with the 9 toothpicks.
To solve this, you simply have to put the toothpicks in the shape of a 1 and a 0 to make "10"
Arrange the 9 toothpicks thus: 7 + 3
To make 5 triangles using 9 toothpicks, you can create a structure by forming a tetrahedron. Start with 6 toothpicks to form a triangular base and three additional toothpicks that connect each vertex of the triangle to a central point above, forming three more triangles with the base. This configuration allows you to utilize all 9 toothpicks effectively to create a total of 5 triangles.
If one of the nine toothpicks is the common base of the two congruent isosceles triangles with sides formed by two toothpicks.
To achieve 9 squares with 24 toothpicks and then remove 4 while still maintaining the 9 squares, you can create a 3x3 grid of squares. Initially, the grid uses 12 toothpicks for the outer squares and 12 for the inner squares. By strategically removing 4 interior toothpicks that don't affect the overall formation of the squares, you can still keep the 9 squares intact. This approach allows you to maintain the structure while reducing the number of toothpicks used.
You can make 5 triangles out of 9 toothpicks. With 6 toothpicks, make a large triangle with 2 toothpicks for each side. Now, take individual toothpicks, and make a smaller triangle inside the larger one by joining the midpoints of the sides of the previous triangle. (The vertices of the smaller triangle are the midpoints of the sides of the larger one).
There is a pattern here: Level 1 uses 3 = 3 × 1 toothpicks Level 2 uses 6 = 3 × 2 toothpicks Level 3 uses 9 = 3 × 3 toothpicks So it looks like each level uses 3 times the level number of toothpicks. ı→ 3 × level = 24 → level = 24 ÷ 3 = 8 So Level 8 uses 24 toothpicks.
form triangles side by side
break the toothpicks and you've doubled your amount of toothpicks
write N..I..N..E with the picks
24 toothpicks.