Subject: equilateral triangle Name: Peggy Who is asking: Teacher Level: Elementary Question: Please send directions to make an equilateral triangle in plane geometry. I want each student to draw two, cut them out, and place them together to form a Jewish Star. We are beginning the reading of Number the Stars. Hi Peggy, The directions I have use a compass so, depending on the age of your students, you may want to make the triangles yourself and have the students trace around them. Draw a line that is the length that you want for a side of the triangle. I have called the ends of the line P and Q in the diagram below. Put the point of the compass at P and open the compass so that the pencil is at Q. With this setting on the compass and the compass point at P draw an arc of a circle above the line. Without changing the setting on the compass move the point to Q and draw an arc which intersects the arc you already drew. Join P and Q to the point of intersection to form an equilateral triangle. If you don't have a compass that is large enough you can make do with some string with one end tied around a pencil. I hope this helps, Penny Go to Math Central