题目内容

When a line goes all the way around, it makes a 3 .

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You can use a circle, three small circles and a 4 line to make a face.

On another piece of paper, draw a circle. Then make it a mouse with eyes, ears, and 5 . Use lines and more circles.

If we cut a circle in half, we get two half-circles. You can use four half-circles to draw a 5 .

When aline turns a corner three times, it makes a triangle. Triangleshave three sides and three corners.You can use triangles to make a face on a 7 .