Across
1
Amount of space an object occupies
4
Exact correspondence on both sides
5
Three-sided polygon
7
Parts per hundred
8
Part of a line with two endpoints
Down
2
Longest side of a right triangle
3
Sum divided by count
6
Mathematical rule or equation
9
Result of raising a number to an exponent
10
U-shaped curve of a quadratic function
11
Single numeral from 0 to 9