Across
1
System of ordered marks for measuring
4
Mathematical statement of equality
5
Divisible by two
7
Rectangular array of numbers
8
Three-sided polygon
Down
1
Rectangle with four equal sides
2
Split into equal parts
3
Symbol representing unknown value
6
Corner point of a polygon
9
Result of raising a number to an exponent
10
Part of a whole number
11
Total distance around a shape
12
Math using letters for unknown values