Crossword Puzzle - Vocabulary

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Across
  1. 4. Value The ___ of tan, sine,or cosine can be a fraction to give a more accurate answer, rather than an approximation.
  2. 5. Equations that are always true for right angled triangles
  3. 7. A measure for angles, with 360 ___ being the full rotation
  4. 9. Identity The ___ comes from the Pythagorean theorem, with the first theorem stating that the right triangles formed by a unit circle will have a hypotenuse of 1.
  5. 11. The ___ of a polygon is half of its perimeter
  6. 12. A ___ is a closed figure/shape with three sides
  7. 13. triangle trigonometry In ___, the three trigonometric ratios are sine,cosine, and tangent, and are used to calculate unknown lengths and angles of a right triangle
  8. 14. A line that passes through the vertex of a triangle, meeting the other side and creating a right angle. A triangle has 3 of these
  9. 16. In a right triangle, the ___ of an angle is the length of the opposite side divided by the length of the hypotenuse.
Down
  1. 1. The four sections on a coordinate plane
  2. 2. In a right triangle, the ___ of an angle is the length of the adjacent side divided by the length of the hypotenuse
  3. 3. ___ is the study of triangles and the relationship of its sides and angles
  4. 6. A helpful mnemonic for remembering trigonometric functions-sine, cosine, and tangent
  5. 8. In a right triangle, the ___ of one angle is the length of the opposite side divided by the length of the adjacent side.
  6. 10. angle the smallest angle between the terminal(ending) side and the x-axis.(Hint: always less than or equal to 90 degrees)
  7. 15. of Cosines Rule for finding the third side of a triangle when we know two sides and the angle between them, and to find the angles of a triangle when we know all three sides; c^2 = a^2 + b^2 − 2ab cos(C)