Across
- 2. a + b + c
- 4. the circumscribed circle or circumcircle of a polygon is a circle that passes through all the vertices of the polygon
- 7. a triangle center, a point defined for any triangle in a way that is independent of the triangle's placement or scale
- 8. the common intersection of the three altitudes of a triangle or their extensions or of the several altitudes of a polyhedron provided these latter exist and meet in a point
- 11. made up of simple geometric shapes.
- 12. The distance along the arc (part of the circumference of a circle, or of any curve)
- 13. any polygon which is inscribed in a shape
- 14. A set of lines or curves are said to be concurrent if they all intersect
- 15. the perpendicular drawn from the vertex of the triangle to the opposite side
Down
- 1. A line segment from a vertex (corner point) to the midpoint of the opposite side
- 3. Comprehensive paragraphs that explain the process of each proof
- 5. A formal proof that is set up with boxes that flow from one to the next with arrows
- 6. A point of concurrency is a single point shared by three or more lines
- 9. the Euler line, named after Leonhard Euler, is a line determined from any triangle that is not equilateral.
- 10. The point where the three medians coincide