Question

Given that ABCD is a rhombus, what is the value of x?

Answer 1

is that an exponent on the side outside the parenthesis? 

Answer 2

option E (x = 25°)

Explanation:

Given ABCD is a rhombus.

Since rhombus is a quadrilateral in which diagonal perpendicular bisect each other.

Therefore, in a triangle formed by two angles x°, (x + 40) and 90°

x + x + 4- + 90 = 180°

2x + 130 = 180°

2x = 180 - 130

2x = 50°

x = 25°

Therefore, option E (x = 25°) is the answer.