Across
1
System of ordered marks for measuring
4
Number divisible only by 1 and itself
5
Amount of space an object occupies
6
Collection of distinct elements
Down
1
Rectangle with four equal sides
2
Comparison of two quantities
3
Number less than zero
6
Part of a line with two endpoints
7
Round shape with all points equidistant
8
Lines that never intersect
9
Longest side of a right triangle