Across
1
Exact correspondence on both sides
3
U-shaped curve of a quadratic function
5
Amount of space an object occupies
6
Line touching circle at one point
10
Number divisible only by 1 and itself
11
Mathematical statement of equality
Down
1
Part of a line with two endpoints
2
Part of a whole number
3
Closed shape with straight sides
4
Middle value in an ordered dataset
7
Proven mathematical statement
8
Number with digits after a point
9
Rectangular array of numbers