O dreapta este axa de simetrie a unei figuri daca

English:A line through a shape so that each side is a mirror image. When the shape is folded in half along the axis of symmetry, then the two halves match up.

o dreapta este axa de simetrie a unei figuri daca

Step-by-step explanation:

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons