Math Open Reference
| After doing this | Your work should look like this |
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We start with two line segments AB and CD that define the lengths of the legs and the base of the triangle. |
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| 1. Draw a point P that will become one end of the base of the triangle. |  |
| 2. Place the point of the compass on the point C and adjust the compass width to the desired length CD of the base of the finished triangle |  |
| 3. With the compass point on P, make an arc. |  |
| 4. Pick a point R anywhere on the arc. This will become the other end of the base of the triangle. |  |
| 5. Draw the base line PR. |  |
| 6. With the compass point on B, set its width to the desired side length - AB |  |
| 7. Without changing the compass, make two intersecting arcs - one from P, the other from R to define the third vertex, Q, of the triangle. |  |
| 8. Draw the two side lines PQ and RQ |  |
| 9. Done. The triangle PQR is an isosceles triangle. |  |