If two points on a line are (4,6) and b (8,-8) the rise and the run so the slope of the line is

Which pair of angles are vertical angles? ∠1 and ∠4∠1 and ∠2∠2 and ∠4∠2 and ∠3more than one answer.

In a box lenght 1m breadth 60 cm and height 40 cm small rectangular packets of dimension 5 cm into 8 cm into 10 cm are packed. how many such small packets can be packed in the big box?

Explain why the factor 1.5 is broke. into two numbers in the model.