Crossword in Mathematics

1. angle with a measure greater than 90 but less than 180.
5. quadrilateral with exactly one pair of parallel sides
6. a circle is a geometric line segment whose endpoints both lie on the circle. A secant line, or just secant, is the line extension of a chord. More generally, a chord is a line segment joining two points on any curve, for instance an ellipse. A chord that passes through a circle's center point is the circle's diameter.
10. quadrilateral with two pairs of parallel sides
14. is a branch of mathematics that deals with the scientific collection, organization, presentation, analysis and interpretation of numeral data in order to obtain useful and meaning information.
15. a line that is coplanar with the circle and intersects the circle in exactly one point.
16. is a algebraic expression that is a sum of 2 or more terms.
18. parallelogram with four congruent sides.
19. the union of three or more coplanar segments which intersect at end points,with each end point shared by only two non collinear segments.

2. aline thet intersects the Circle in two points.
3. error an unavoidable error the results from chance variations in the measurement caused by changes in presures and temperature.
4. mass the mas of an object is measured by means of a force everted by the earth gravitation or the weight.
7. is measured in square units a square unit is a square with a side 1 unit in length.
8. our sided polygon
9. angle with a measure of 90.
11. angle with a measure greater that 0 but less than 90.
12. parallelogram witj four right angels.
13. the union of two noncollinear rays with a common endpoint
16. the quantity with the most number of frequency.
17. polya (1887-1985) a Hungarian american mathematics educator,believed that problem solving was an art, and that w/ practice it could be mastered for simple steps to solve a problem: read,plan solve and check.
20. any well defined collection or group of objects.