The answer is m∠R = 48.59
°
Answer:
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Step-by-step explanation:send ur location come thruuuuuuuuuuuuuuuuuuuuuuuuuuu
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Angles B and D are supplementary angles, so if B's angle is 30 degrees, then D's angle at y would be 150, since they have to add to 180.
In short, angle y = 150
Answer:
540°
Step-by-step explanation:
Just divide the shape into triangles and count the number of triangles. This is what your formula is doing for you. It's telling you how many triangles make up the shape and then multiplying that number by 180 degrees to find the sum of your interior angles.