1. Prove one of the theorems about isosceles triangles
2. Prove another of the theorems about isosceles triangles.
3. Prove one of the theorems about circles.
4. Given a triangle, construct the three perpendicular bisectors, the three angle bisectors, the three medians and the three altitudes. Draw in the circumscribed circle, the inscribed circle, and the Euler line.
5. Given that DE || BC, AB = 8, BC = 12, AD = 5, find DE.
6. Prove one of the compass and straightedge constructions