Across
1
Longest side of a right triangle
5
Part of a circle's circumference
6
Number with digits after a point
10
Line touching circle at one point
11
Power to which a number is raised
12
Split into equal parts
13
Divisible by two
Down
2
Corner point of a polygon
3
Rectangle with four equal sides
4
Proven mathematical statement
5
Space between two intersecting lines
7
Closed shape with straight sides
8
Symbol representing unknown value
9
Result of multiplication