Geometry Crossword

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Across
  1. 3. If two chords intersect in the interior of a circle, then the product of the segments of one chord is equal to the product of the lengths of the segments of the other chord; example equation is AE x BE = CE x DE
  2. 5. This is an angle whose vertex is the center of the circle; a minor arc measures less than 180 degrees and is equal to the measure of its central angle; major arc measures more than 180 degrees but less than 360 degrees and is found by 360 minus its associated minor arc
  3. 9. Within a circle or congruent circles, congruent chords have congruent arcs; within a circle or in congruent circle, chords equidistant from the center or centers are congruent
  4. 10. An equilateral polygon is a polygon with all sides congruent; an equiangular polygon is a poly with all angles congruent
  5. 12. This is a trigonometry term; this is the adjacent side over the hypotenuse
  6. 14. This is a trigonometry term; this is the opposite side of a triangle over the hypotenuse
  7. 15. in order to reflect an object, a line of reflection is needed. It is directly in the middle of a point in the original and its corresponding point in the image
  8. 16. This is the set of all points in space that is a given distance from a point; if a plane intersects this, then the intersection is either a point or a circle
  9. 17. The area of sector of a circle is the product of the ration: measure of the arc/360 and the area of a circle; the formula is measure of arc AB/360 x pi r squared
  10. 18. This is a 3 sided polygon; this equals 180 degrees
  11. 19. The lateral area of this is the product of Lateral-Area-Of-A-Cylinder the circumference of the base and the height; the formula is 2 pi rh
Down
  1. 1. Radius of a regular polygon is the distance from the center of the regular polygon to a vertex; apothem of a regular polygon is perpendicular distance from the center of a regular polygon to a side
  2. 2. If two secant segments share the same endpoint outside a circle, then the product of the length of one secant segment and the length of its external segment equals the product of the length of the other secant segment and the length of its external segment; example equation is EA x EB= EC x ED
  3. 4. This an angle whose vertex is on the circle and sides contain chords; the measure of the angle is half of its arc
  4. 6. This is the sum of the areas of the lateral faces; this doesn’t include bases.
  5. 7. this is the amount of space inside a circle; the formula is A=pi r squared
  6. 8. These can be clockwise or counterclockwise; the shape and measurements remain the same
  7. 11. This is a trigonometry term; this is the opposite side over the adjacent side
  8. 13. This is the amount of space that a 3-D figure occupies; this uses cubic units