Across
1
Exact correspondence on both sides
6
Steepness of a line
7
Result of addition
8
Amount of space an object occupies
10
Single numeral from 0 to 9
12
Result of multiplication
13
Part of a line with two endpoints
Down
2
Reference line in a graph
3
Divisible by two
4
Distance from center to edge of circle
5
Proven mathematical statement
6
Rectangle with four equal sides
9
Line touching circle at one point
11
Part of a whole number
12
Closed shape with straight sides