Anita says the plus sign + forms 2 pairs of vetical angles. Charles says it forms 2 pairs of congruent angles? Who is correct, and why?

Wouldn't it be both, because there are 2 pairs of opposite angles with the same measure, and 4 congruent angles.

You are partially correct. Both Anita and Charles are correct, but they are referring to different properties of vertical angles.

First, let's define vertical angles. Vertical angles are formed when two lines intersect. They are opposite to each other and have the same measure. So, in the case of a plus sign (+) shape formed by two lines intersecting, there are indeed two pairs of vertical angles. Each pair consists of two angles that are opposite to each other and have the same measure.

So, Anita is correct in saying that the plus sign (+) forms two pairs of vertical angles.

On the other hand, Charles is also correct, but his statement is more general. When two lines intersect, they form four angles, and in the case of a plus sign (+), all four angles are congruent. Congruent angles are angles with the same measure. So, Charles is correct in saying that the plus sign (+) also forms four congruent angles.

In summary, Anita is correct in emphasizing the vertical angles formed by the plus sign (+), while Charles is correct in stating that all four angles formed by the plus sign (+) are congruent.