##### Across

**5.**6. All whole numbers, positive or negative, including zero**9.**The bottom of a shape or three-dimensional object, what an object rests on**10.**2. A step by step procedure by which an operation can be carried out**11.**Line segments joined together to form a closed figure**13.**1. A straight line with only one endpoint that extends infinitely**14.**7. An equation that is true for variables of any value**15.**5. A line is where two faces meet in a three-dimensional structure**16.**Two rays sharing the same endpoint (vertex)**17.**4. Objects and figures that have the same size and shape**18.**4. A segment joining two points on a circle**19.**8. A letter used to represent a numerical value in equations and expressions

##### Down

**1.**5. A value that does not change**2.**7. The measure of how heavy something is**3.**6. a graph that uses bars that equal ranges of values**4.**9. A ratio or fraction with the denominator 100**6.**9. A line that crosses/intersects two or more lines**7.**8. The total distance around the outside of a polygon**8.**1. The branch of mathematics that substitutes letters for numbers to solve for unknown values**12.**3. A polynomial equation with two terms usually joined by a plus or minus sign**13.**10. The difference between the maximum and minimum in a set of data