Biology

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Across
  1. 2. The center of a triangles circumcircle.
  2. 5. Opposite operations that undo each other.
  3. 8. A line segment that joins and vertex of the triangle to the midpoint of the opposite side.
  4. 10. The perpendicular drawn from the vertex of the triangle to the opposite side.
  5. 11. When 3 or more points lie on a single straight line.
  6. 13. A straight, one-dimensional figure.
  7. 14. A triangle that measures greater than 90 degrees.
  8. 15. Two lines that will never intersect each other.
  9. 16. The point on a line segment or an arc that is equidistant from both endpoints.
Down
  1. 1. Lines that meet at a single point.
  2. 3. Exactly equal shape and size.
  3. 4. Two angles add up to 90 degrees.
  4. 6. Angles formed when two lines intersect each other at a single point.
  5. 7. The center point of the object.
  6. 8. Quantifying the length, weight, and capacity of an object.
  7. 9. A statement joining two events together.
  8. 10. Formed when two straight lines or rays meet at a common endpoint.
  9. 12. A statement arrived at by applying a set of logical rules.