1. Use the [b]Semicircle [/b]tool to create a semicircle with points A and B.[br][br]2. Connect points A and B with a line segment.[br][br]3. Create a point C anywhere on the semicircle.[br][br]4. Create the triangle ABC.[br][br]5. Use the [b]Move [/b]tool to change the size of the semicircle.[br][br]6. Use the [b]Move [/b]tool to move point C to another location on the semicircle.