Across
1
Mathematical statement of equality
4
Collection of distinct elements
5
Three-sided polygon
6
Line segment connecting two circle points
7
System of ordered marks for measuring
8
Total distance around a shape
Down
2
Symbol representing unknown value
3
Rectangle with four equal sides
4
Part of a line with two endpoints
5
Proven mathematical statement
6
Value that does not change
9
Corner point of a polygon
10
Result of raising a number to an exponent
11
Comparison of two quantities