Across
1
Three-sided polygon
4
Line segment connecting two circle points
6
Rectangle with four equal sides
8
Longest side of a right triangle
9
Amount of space an object occupies
10
Proven mathematical statement
14
Steepness of a line
Down
2
Parts per hundred
3
Round shape with all points equidistant
5
Number greater than zero
7
Value that does not change
11
Comparison of two quantities
12
Difference between highest and lowest values
13
Mathematical rule or equation
15
Rectangular array of numbers