Question

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Answer 1

Answer:

angle A is equal to angle D so x will equal to 30 degree.

Step-by-step explanation:

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Answer 2

Answer:

∆ ABC is a equilateral triangle.

Then, it's each interior angle is 60°.

Then, <B = 180 - 60 = 120°.

so, <B = 120°.

The sum of interior angles of a ∆ is 180°.

x + 30 + 120 = 180

=> x + 150 = 180

=> x = 180 - 150

=> x = 30°.

so, the value of x is 30°.