30
5 and 10 10 and 15 5 and 15
5 and 10 10 and 15 15 and 20
5 and 10 5 and 15 5 and 20
Here are three shapes that have two pairs of parallel lines: square parallelogram rectangle There are many polygons with at least two pairs of parallel lines. hexagon (has 3 pairs of parallel lines) octagon (has 4 pairs) decagon (has 5 pairs)
5 and 10 5 and 15 5 and 20
4 and 5 5 and 6 6 and 7
5 and 10 10 and 15 5 and 15
5 and 10 10 and 15 15 and 20
5, 10 15, 20 500, 505
Yes , ants have three pairs of legs .
There are three pairs.
In phosphine (PH3), there are three lone pairs and three bonding pairs.