Across
- 3. is the portion of a solid (normally a cone or pyramid) that lies between two parallel planes cutting it
- 4. a closed plane figure bounded by straight sides
- 5. What does the formula 2(l+b) help in finding out in a rectangle
- 7. lines that intersect to form right angles
- 8. a line that intersects two or more coplanar lines at different points
- 12. The Longest side of a right triangle
- 14. a line or segment that cuts another segment in to two congruent halves
- 15. infinite series of points
- 16. Instrument used to make perpendicular Bisector
- 19. the point in a triangle where all the medians intersect
- 20. distance from the center of a circle to a point on the circle
- 21. What is the line that intersects the circle at only one point
Down
- 1. All sides are congruent or equal & Opposite sides are paralle
- 2. Two angles whose sum is 90 degrees
- 6. The formula: a²+b²=c² was written by ______________
- 9. a line segment from a vertex of a triangle to the opposite side forming a right angle
- 10. Area of corresponding sector- Area of Corresponding Triangle= Area of ________ of a circle
- 11. The Length of the the 2 tangents from an external point to a circle are________
- 12. A half of a sphere
- 13. triangle with no equal sides or angles
- 17. a line segment that starts at a vertex of a triangle and goes to the midpoint of the opposite side
- 18. an angle less than 90 degrees