Across
1
Line segment connecting two circle points
3
Mathematical rule or equation
4
Reference line in a graph
5
Rectangle with four equal sides
6
Mathematical statement of equality
8
Corner point of a polygon
9
Collection of distinct elements
Down
1
Value that does not change
2
U-shaped curve of a quadratic function
7
Split into equal parts
9
Result of addition
10
Symbol representing unknown value
11
Line crossing from corner to corner