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Q: Can you make 2 exact triangles using exactly 9 toothpicks?

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using four of them you make a square then using the remaining two make a criss cross in the middle of the square.

The two triangles would make either a square or a rectangle.

Make a triangle, each of whose sides is 2 matchsticks long. This uses six matchsticks. Join the middle points of the sides of this triangle to one another - using another three match sticks. You will then have four small triangles and one large one.

The triangles must be congruent.

You can make three rectangles. Remember that a square can also be a rectangle.5x14x23x3

Related questions

Make a two by two grid with six toothpicks, and then place the other two toothpicks at a 45 degree angle on the corner of two of the squares.

using four of them you make a square then using the remaining two make a criss cross in the middle of the square.

The two triangles would make either a square or a rectangle.

[The answer will depend on how exactly you count your squares (for instance, there are arguably 10 squares in the solution below, not 8) and whether there are any rules about how to lay the toothpicks down.] A possibility is just to make two big squares using four toothpicks each, and to divide each into four smaller squares using the four remaining toothpicks.

Try using lots of triangles and pyramids, because they are a lot sturdier and stronger than squares and pentagons and hexagons etc. But if you HAVE to use squares, then reinforce the corners by building triangles into them.

John built a model of a frog skeleton using toothpicks

Yes. Make one triangle using hree matches. Underneath the two vertices at the base of this triangle, make another two triangles, using six more matches. You will find that there is an inverted triangle in the middle - the fourth.

lots of glue.

You can make hot cinnamon toothpicks using boiling water instead of soaking in a jar by using regulated heat.

using toothpicks

Make a triangle, each of whose sides is 2 matchsticks long. This uses six matchsticks. Join the middle points of the sides of this triangle to one another - using another three match sticks. You will then have four small triangles and one large one.

using toothpicks

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