G-C.A.3. Construct the inscribed and circumscribed circles of a triangle, and prove properties of angles for a quadrilateral inscribed in a circle.

• Circumcenter of a triangle
• Circumscribed Triangles
• Inscribing a circle in a triangle I
• Inscribing a circle in a triangle II
• Inscribing a triangle in a circle
• Locating Warehouse
• Opposite Angles in a Cyclic Quadrilateral
• Placing a Fire Hydrant