Which options identify what the arrows in the diagram represent check all that apply

a. atoms

b. elements

c. energy

d. gas

e. particles

How to determine whether two known pairs of points are on the same line.

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.

Corresponding angles are a. always b. sometimes c. never congruent