Across
1
Number divisible only by 1 and itself
4
Rectangle with four equal sides
5
Line touching circle at one point
9
Number with digits after a point
10
Closed shape with straight sides
11
Divisible by two
Down
2
Space between two intersecting lines
3
Proven mathematical statement
6
Longest side of a right triangle
7
Three-sided polygon
8
Result of raising a number to an exponent
12
Mathematical statement of equality
13
Corner point of a polygon