Across
1
Difference between highest and lowest values
5
Amount of space an object occupies
6
Space between two intersecting lines
7
Split into equal parts
8
Result of addition
9
Round shape with all points equidistant
10
Value that does not change
12
System of ordered marks for measuring
Down
2
Closed shape with straight sides
3
Proven mathematical statement
4
Number with digits after a point
11
Rectangle with four equal sides