Across
1
Part of a line with two endpoints
5
Space between two intersecting lines
6
Result of raising a number to an exponent
7
Three-sided polygon
8
System of ordered marks for measuring
11
Proven mathematical statement
13
Divisible by two
Down
2
Line touching circle at one point
3
Mathematical statement of equality
4
Collection of distinct elements
9
Visual representation of data
10
Longest side of a right triangle
12
Total distance around a shape
14
Repeated addition