Across
1
Rectangular array of numbers
4
Longest side of a right triangle
7
Result of multiplication
8
Math using letters for unknown values
9
Three-sided polygon
11
Number divisible only by 1 and itself
13
Value that does not change
14
Repeated addition
Down
2
Part of a circle's circumference
3
Number with digits after a point
5
Exact correspondence on both sides
6
Result of raising a number to an exponent
10
Round shape with all points equidistant
12
Line touching circle at one point