Across
1
Number with digits after a point
3
Power to which a number is raised
5
The number representing nothing
6
Line touching circle at one point
7
Number divisible only by 1 and itself
8
Rectangle with four equal sides
10
U-shaped curve of a quadratic function
11
Result of multiplication
Down
1
Line crossing from corner to corner
2
Longest side of a right triangle
4
Part of a whole number
8
Result of addition
9
Mathematical rule or equation
12
Part of a line with two endpoints
13
Repeated addition