Across
1
Rectangle with four equal sides
3
Divisible by two
4
Visual representation of data
5
Number divisible only by 1 and itself
7
Steepness of a line
10
Space between two intersecting lines
11
Rectangular array of numbers
Down
2
Total distance around a shape
6
Symbol representing unknown value
8
Result of raising a number to an exponent
9
Part of a line with two endpoints