Across
1
Corner point of a polygon
3
Collection of distinct elements
4
Longest side of a right triangle
5
Line touching circle at one point
6
Split into equal parts
10
Math using letters for unknown values
11
Difference between highest and lowest values
12
Result of addition
Down
2
Divisible by two
3
System of ordered marks for measuring
7
Line crossing from corner to corner
8
Proven mathematical statement
9
Steepness of a line