Across
1
Symbol representing unknown value
3
Corner point of a polygon
4
Power to which a number is raised
5
Steepness of a line
6
Result of addition
11
Part of a circle's circumference
Down
2
Distance from center to edge of circle
3
Amount of space an object occupies
7
Number with digits after a point
8
Mathematical statement of equality
9
System of ordered marks for measuring
10
Proven mathematical statement