3 years ago

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

Mathematics

1 answer:

Kruka [31]3 years ago

3 0

Answer:

D. 18

Step-by-step 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

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