Across
1
Round shape with all points equidistant
4
Part of a line with two endpoints
5
Steepness of a line
6
Result of addition
8
Space between two intersecting lines
9
U-shaped curve of a quadratic function
10
Divisible by two
11
Split into equal parts
Down
2
Total distance around a shape
3
Longest side of a right triangle
7
Distance from center to edge of circle