Which fact would you to solve for x in the diagram shown? a) angles in an equilateral triangle are congruent. b) the sum of the interior angles in a quadrilateral is 360°. c) alternate interior angles formed by a transversal and parallel lines are congruent. d) the exterior angle of a triangle is equal to the sum of the two remote interior angles.

(A) Angles in equilateral triangle are congruent

Step-by-step explanation:

From the figure, it can be seen that in triangle ABD, which means that all the sides of the triangle are congruent and by the definition of equilateral triangle, ΔABD will be an equilateral triangle.

Therefore, Using the property that Angles in equilateral triangle are congruent, we can find the value of x.

Thus, option A is correct.

10 * 563.67 = 5636.7

what are you trying find out?

step-by-step explanation: