Parts of a Triangle Nomenclature Crossword

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Across
  1. 5. One of the three connected straight lines in a triangle.
  2. 6. A perpendicular line segment from a vertex to the opposite side.
  3. 8. The point where all altitudes meet.
  4. 9. The point where all three medians intersect.
  5. 10. A figure formed by two rays that share a vertex.
Down
  1. 1. The outside boundary of a shape.
  2. 2. The bottom side of a triangle.
  3. 3. The amount of area inside a shape.
  4. 4. The points where two sides meet.
  5. 7. A line segment connecting a vertex to the midpoint of the opposite side.