Question

Kiara saw a railroad crossing sign shaped like an X. Kiara knows that the railroad crossing sign has two vertical angles. How can she know that?

A) Because both angles have the same measure.
B) Because the angles are located vertically above one another.
C) Because the angles are in the shape of an X.
D) Because they add up to 90 degrees.

Answer 1

Kiara knows that a railroad crossing sign has two vertical angles because the angles are located vertically above one another and share the same vertex. Vertical angles always have the same measure.

Step-by-step explanation:

Kiara can know that the railroad crossing sign has two vertical angles because of option B: Because the angles are located vertically above one another. Vertical angles are the angles opposite each other when two lines cross. They are called "vertical" because they share the same vertex (or corner point), not because they are upright. Vertical angles are equal to each other. In the case of the railroad crossing sign shaped like an X, the sign consists of two lines intersecting each other to form two pairs of vertical angles. These angles are not necessarily perpendicular and do not add up to 90 degrees; instead, each pair of vertical angles have the same measure.