Across
1
Corner point of a polygon
3
Mathematical rule or equation
5
Number divisible only by 1 and itself
6
System of ordered marks for measuring
8
Three-sided polygon
10
Amount of space an object occupies
11
Line crossing from corner to corner
12
Divisible by two
13
Parts per hundred
Down
2
Proven mathematical statement
4
Power to which a number is raised
6
Result of addition
7
Space between two intersecting lines
9
Part of a circle's circumference