Across
1
Space between two intersecting lines
4
Steepness of a line
5
Corner point of a polygon
6
Number divisible only by 1 and itself
9
Collection of distinct elements
10
Line crossing from corner to corner
11
Part of a circle's circumference
13
Proven mathematical statement
14
Number that divides evenly into another
Down
2
Split into equal parts
3
Longest side of a right triangle
6
Result of multiplication
7
Number greater than zero
8
Three-sided polygon
12
System of ordered marks for measuring