Across 2. the vertex that is the highest point of the figure to which it belongs; the top of a pyramid or cone for example 6. an angle more than 90 degrees but less than 180 degrees 7. size of a surface; the amount of space inside a two dimensional shape 10. a line meeting another line at a right angle 12. a statement that two ratios are equal 13. shows the relative sizes of two or more values, expressed with a colon 1:2 or as a fraction 1/2 14. angle less than 90 degrees 16. a way of writing very large or very small numbers using a number between one and ten multiplied by a power of ten (2 Words) 19. a flat shape with four equal straight sides; a diamond shape 21. a whole number and a fraction together in one number (2 Words) 23. the surface a solid object stands on (3D), or the line that forms the bottom of a shape (2D) 24. the units of angle measure 25. the 3D space enclosed by a boundary or occupied by an object 26. a number less than zero 27. the common end point of two or more rays or line segments 28. length of the line segment drawn from the center to the outer edge of a circle or sphere

Down 1. how many parts of a whole; has a numerator and a denominator 3. a flat, two dimensional (2D) extending surface 4. two angles that add up to 90 degrees 5. a number more than zero 8. a 2D figure with four straight sides and ONE pair of parallel lines 9. the same shape and size 10. a flat shape with four sides, pairs of sides are parallel 11. the mathematical likelihood of an event happening; what is the chance? 15. the distance around a circle's outer edge 17. 3D shape with two round ends and parallel sides 18. a 3D figure with a base and three or more triangular sides meeting at the apex 20. a 2D figure with four straight sides of equal length and all interior angles are right angles 22. a line segment whose end points lie on the edges of a circle and whose midpoint is the center of the circle