Across
1
Parts per hundred
4
Result of multiplication
5
Part of a line with two endpoints
6
Exact correspondence on both sides
8
Line crossing from corner to corner
9
Round shape with all points equidistant
11
Part of a circle's circumference
Down
1
Lines that never intersect
2
Space between two intersecting lines
3
Amount of space an object occupies
4
Total distance around a shape
7
Value that does not change
10
Symbol representing unknown value