Across
1
Part of a line with two endpoints
4
Line touching circle at one point
6
Steepness of a line
7
Distance from center to edge of circle
11
Value that does not change
14
Amount of space an object occupies
Down
2
Corner point of a polygon
3
Line crossing from corner to corner
5
Number divisible only by 1 and itself
8
Exact correspondence on both sides
9
Mathematical rule or equation
10
Mathematical statement of equality
12
Closed shape with straight sides
13
Part of a whole number