Across
1
Space between two intersecting lines
2
Value that does not change
4
Number divisible only by 1 and itself
5
Total distance around a shape
6
Longest side of a right triangle
Down
2
Round shape with all points equidistant
3
Part of a line with two endpoints
4
Number greater than zero
5
U-shaped curve of a quadratic function
7
Reference line in a graph
8
Amount of space an object occupies