Geometry

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Across
  1. 4. An angle of a triangle that is formed by the legs of a triangle. | This is the angle between the two other angles of a triangle.
  2. 5. An angle formed by two sides that share a common vertex. | Any of the angles of a triangle can be this.
  3. 7. Its endpoints are on a circle and at its center at the halfway point. | This is half of the diameter.
  4. 8. This has two points that lie on a circle with all points in between. | The unbroken part of a circle.
  5. 10. A triangle that has three congruent angles. | The angles of this triangle are all 60*
  6. 13. An arc whose endpoints are on the exterior of a corresponding central angle. | The measure of this arc is equal to 360 degrees minus the central angle.
  7. 14. An angle whose vertex is on a circle | Angle whose sides contain chords of the circle.
  8. 15. Sentence made based upon a figure | D is the midpoint of segment BC.
  9. 16. Two angles whose sum is 90 degrees. | 45 and 45 are _____________ ______.
  10. 18. An arc whose endpoints lie on the endpoints of the diameter, | The measure of this arc is 180 degrees.
  11. 21. Statement that is being proved is assumed to be false | This is not true because _____.
  12. 22. A triangle in which has two equal sides. | Is almost like an equilateral triangle, but not quite.
  13. 24. The distance along a circular arc measured in linear units. | This is found by the formula named after this concept.
  14. 26. Maps points onto other points of a plane | Rigid and non-rigid motions are this.
  15. 27. Lines that do not intersect | Segment R is congruent to segment S.
  16. 29. An angle less than 180 degrees. | This angle's vertex lies at the center of a circle.
Down
  1. 1. This is formed by swapping the hypothesis and conclusion. | The opposite of something.
  2. 2. A line that intersects a circle at exactly one point. | The point of tangency is where this and a circle intersect.
  3. 3. Argument using logic to prove conclusion as true | 'Given' is a word commonly used for this.
  4. 4. Nonadjacent angle formed by two intersecting lines | This is called a kissing angle, too.
  5. 6. A triangle whose sides are all equal. | Is almost like an isosceles triangle but one thing about this shape differs.
  6. 9. This supports and proves statements. | An example of this is, 'Definition of midpoint.'
  7. 11. Its endpoints lie on the circle at the halfway point. | This is twice the radius.
  8. 12. An angle formed by one side of a polygon and the extension of an adjacent side. | Is complimentary with adjacent angle.
  9. 17. Two angles whose sum is 180 degrees. | 60 and 120 are _____________ ______.
  10. 19. Changes position of figure but not other properties. | Translations are this.
  11. 20. Motions, Size or shape changes as it moves position. | Dilation is this type of motion.
  12. 23. Having the same size and shape. | Can be used to define two different line segments.
  13. 25. An arc whose points are on or in the interior of a corresponding interior angle. | The measure of this arc is equal to the measure of the central angle.
  14. 28. Segment whose endpoints lie on a circle | Makes up the inscribed angle.