Across
1
The number representing nothing
4
Corner point of a polygon
5
Number greater than zero
6
Result of multiplication
9
Part of a whole number
10
Proven mathematical statement
11
System of ordered marks for measuring
12
Line touching circle at one point
Down
2
Round shape with all points equidistant
3
Distance from center to edge of circle
5
Parts per hundred
7
Power to which a number is raised
8
Longest side of a right triangle
13
Split into equal parts