geometry project

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Across
  1. 3. (cos) In a right triangle, cosine of an angle is the ratio of the length of the adjacent side to the length of the hypotenuse:(θ) = adjacent / hypotenuse
  2. 7. Formed by two rays (or line segments) that share a common endpoint called the vertex.
  3. 9. (tan) In a right triangle, tangent of an angle is the ratio of the length of the opposite side to the length of the adjacent side: tan(θ) = opposite / adjacent
  4. 10. A straight path that extends infinitely in both directions with no endpoints; it has infinite length but no thickness.
  5. 13. The horizontal number line in the coordinate plane.
  6. 15. Formula A formula used to find the point that is exactly halfway between two given points: M= ((x₁ + x₂)/2, (y₁ + y₂)/2)
  7. 16. Pair A pair of adjacent angles whose non-common sides form a straight line. The angles in a linear pair are supplementary.
  8. 17. Angle An angle that measures greater than 0° and less than 90°.
  9. 18. (sin) In a right triangle, sine of an angle is the ratio of the length of the opposite side to the length of the hypotenuse: sin (θ) = opposite / hypotenuse
  10. 22. A branch of mathematics that deals with the relationships between the angles and sides of triangles, especially right triangles.
  11. 24. Segment A part of a line that has two endpoints and includes all the points between them.
  12. 26. A part of a line that has one endpoint and extends infinitely in one direction.
  13. 28. Angle An angle that measures greater than 90° but less than 180°.
  14. 29. Angle An angle that measures exactly 90°.
  15. 30. Angles Two angles that share a common side and a common vertex, but do not overlap.
  16. 31. Plane A two-dimensional surface formed by the intersection of a horizontal number line (x-axis) and a vertical number line (y-axis), dividing the plane into four quadrants.
Down
  1. 1. Formula A formula used to find the distance between two points: D = √[(x₂ - x₁)² + (y₂ - y₁)²]
  2. 2. A measure of the steepness of a line; calculated as the ratio of the vertical change to the horizontal change between two points on a line:
  3. 4. of a Line A mathematical expression showing the relationship between x and y on a line. It can be written in various forms
  4. 5. Angle An angle that measures exactly 180° and forms a straight line.
  5. 6. The common endpoint where two rays, line segments, or lines meet to form an angle.
  6. 8. Form A way to write the equation of a line: y = mx + b
  7. 11. Angles Two angles whose measures add up to 90°.
  8. 12. Angles Angles that are opposite each other when two lines intersect. They are always congruent (equal in measure).
  9. 14. Angles Two angles whose measures add up to 180°.
  10. 19. m is the slope and b is the y-intercept.
  11. 20. Pair A pair of numbers written as (x, y) that represents the location of a point on the coordinate plane. The first number is the x-coordinate, and the second is the y-coordinate.
  12. 21. Form A form used to write the equation of a line when you know the slope and one point on the line:y - y₁ = m(x - x₁)
  13. 23. The point where the x-axis and y-axis intersect on the coordinate plane. It has coordinates (0, 0).
  14. 25. location in space that has no size, width, length, or depth; it is usually represented by a dot and labeled with a capital letter.
  15. 27. The vertical number line in the coordinate plane.