Question

Label the vertices and all the elements needed. Find x. Give reasons!

A. Vertex A, Vertex B, Vertex C
B. Angle A, Angle B, Angle C
C. Side AB, Side BC, Side AC
D. x = 90°, x = 60°, x = 30°, x = 120°

Answer 1

The labels of the vertices and elements needed to find x in a triangle are Side AB, Side BC, and Side AC. Using the concept of angles in a triangle, we can find the value of x by summing up all the angles.

Step-by-step explanation:

The question is asking for the labels of the vertices and elements needed to find x in a triangle. The correct answer is option C. Side AB, Side BC, Side AC.

To find x, we need to use the concept of angles in a triangle. In a triangle, the sum of all angles is always 180 degrees. Therefore, Angle A + Angle B + Angle C = 180 degrees.

Since Angle C is given as 90 degrees, and Angle A and Angle B are both unknown, we can sum up all the angles and find the value of x.