Across
1
Steepness of a line
3
Line crossing from corner to corner
6
Math using letters for unknown values
7
Line segment connecting two circle points
8
Result of raising a number to an exponent
9
Exact correspondence on both sides
11
Three-sided polygon
Down
2
Repeated addition
4
Longest side of a right triangle
5
Mathematical statement of equality
9
Collection of distinct elements
10
Part of a line with two endpoints