Across
1
Three-sided polygon
6
Math using letters for unknown values
8
Value that does not change
9
Round shape with all points equidistant
Down
2
Mathematical statement of equality
3
Number less than zero
4
System of ordered marks for measuring
5
Line crossing from corner to corner
7
Part of a whole number
10
Result of raising a number to an exponent
11
Symbol representing unknown value