(SAT Prep) Find y in equilateral △ABC. A. 90° B. 70° C. 60° D. 45°

Explanation:

Equilateral means that all three sides of a triangle are equal to the same value. When an equilateral triangle is identified, we can also know that the angles will be equal to each other.

ΔABC will have angles that all add up to 180° because it is a triangle. Therefore ⇒ .

60

Explanation:

An equilateral triangle has equal sides and equal angles

The sum of the angles in a triangle is 180

There are 3 angles in a triangle

180/3 = 60