Two Dimensional Areas Crossword Across 1. 8. 10. 12. 13. 16. 17. 19. 22. 23. 24. 25. Down The opposite angles of a(n) ____ inscribed in a circle are supplementary. Any line segment connecting two points on a circle forms a(n) _____. The distance around a circle is its ______. The area of plane figures is measured in ____. (two words) If a right triangle is inscribed in a circle, then the diameter will be the triangle's _____. Two chords that are equidistant from the center of a circle, such as the sides of a regular polygon inscribed in the circle, are always ____. (two words) To compute the area of a rhombus, one must calculate half the product of its _____. The area of a circle bounded by two radii forming a central angle and their intercepted arc is called a(n) _____. The perpendicular distance between the bases of a parallelogram or trapezoid (i.e. the length of the altitude) is called the ____. We use the same formula to find the area of a rhombus and a(n) _____. The parallel sides of a parallelogram or trapezoid are called ____. The radii and sides of a regular polygon form congruent ____ equal in number to the sides of the polygon. 2. 3. 4. 5. 6. 7. 9. 10. 11. 14. 15. 18. 19. 20. 21. A line segment extending across a circle passing through the center thereby forming the longest chord of the circle is called the ____. An unbroken part of a circle is called a(n) _____ The distance around a polygon is its _____. The distance from the center of a regular polygon to any one of its vertices is called the _____. The ratio of a circle's circumference to its diameter is represented by the Greek letter ____. The oblique parallelogram has the same area as a(n) _____ with the same base and height--but not the same perimeter. If a regular polygon has side lengths equal to its radius, then the polygon is a(n) _____. The angle formed by two radii of a regular polygon with vertex at the center of the polygon is a(n) _____. If a circle is constructed around a polygon so that all of its vertices lie on the circle, then we say that the circle is _____ around the polygon. The ratio of the area of two similar polygons is equal to the square of their ____. (two words) The area of a triangle is always half the area of a(n) ____ with the same base and height. The perpendicular distance from the center of a regular polygon to any of its sides is called a(n) _____. A(n) _____ of a circle is the area bounded by a chord of a circle and its intercepted arc. While the measure of an arc is given in degrees, its _____ is measured in running units (eg. inches or centimeters). If the area of a figure measures half of the square of its diagonal, then the figure is a(n) ______. Word List APOTHEM ARC BASES CENTRAL ANGLE CHORD CIRCUMFERENCE CIRCUMSCRIBED CONGRUENT CHORDS DIAGONALS DIAMETER HEIGHT HEXAGON HYPOTENUSE KITE LENGTH PARALLELOGRAM PERIMETER PI QUADRILATERAL RADIUS RECTANGLE SCALE RATIO SECTOR SEGMENT SQUARE SQUARE UNITS TRIANGLES Area of Plane Figures -- Chapter 11 by R. Noland 1 2 6 10 7 11 12 13 16 APOTHEM ARC BASES CENTRAL ANGLE CHORD CIRCUMFERENCE CIRCUMSCRIBED CONGRUENT CHORDS DIAGONALS DIAMETER HEIGHT HEXAGON 17 HYPOTENUSE KITE Word List LENGTH PARALLELOGRAM PERIMETER PI QUADRILATERAL RADIUS RECTANGLE SCALE RATIO SECTOR SEGMENT SQUARE SQUARE UNITS TRIANGLES 18