Given that ABCD is a rhombus, what is the value of x? A. 28 B. 56 C. 48.5 D. 18 E. 36 F. Cannot be Determined

Question

asked Sep 4, 2020 5.6k views

2 Answers

Jkee · Answer 1 · 2020-09-10T16:46:15+0000

Answer:

D. 18

Explanation:

∠DAC ≅ ∠BCA and the diagonals cross at right angles, so the two marked angles are complementary.

(5x -18) +x = 90

6x = 108 . . . . . . . . . simplify, add 18

x = 18 . . . . . . . . . . . divide by 6