Across
1
U-shaped curve of a quadratic function
2
Part of a line with two endpoints
4
Corner point of a polygon
5
Mathematical rule or equation
6
Three-sided polygon
8
System of ordered marks for measuring
Down
1
Closed shape with straight sides
2
Result of addition
3
Mathematical statement of equality
5
Number that divides evenly into another
7
Symbol representing unknown value
9
Reference line in a graph