I'm honestly horrible at math, so if anyone could

B. 54 deg

Step-by-step explanation:

The sum of the measures of the angles of a triangle is 180 degrees. The triangle shown has one angle measuring 72 degrees. The other two angles have unknown measures, but they both measure y. Since the same variable y is used for both of the unknown angles, that means the two measures are equal.

We use the fact above about the sum of the measures to set up an equation.

y + y + 72 = 180

Add like terms.

2y + 72 = 180

Subtract 72 from both sides.

2y = 108

Divide both sides by 2.

y = 54

B. 54 deg

Check: 54 + 54 + 72 = 180, showing that 54 is correct.

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step-by-step explanation:

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