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What is the length of MN

What is the length of MN-example-1
User Siefix
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2 Answers

3 votes

Answer:the length of segment MN is 12

Explanation:

because the angles at the bottom of each segment are equal, the length of each segment is equal as well, so set you equation as 3x=x+8, subtract x from 3x then divide 8 by 2 which equals 4. (x=4) then plug in the value of x into x+8 and you have 12

User Gplayer
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2 votes

Answer:

D. 12

Step-by-step explanation

You know this is an isoceles triangle because the two base angles on congruent. That means the two sides are equal. So, 3x = x+8. If you plug in each of the answer choices, you'll notice that 4 fits the equation. If 4 equals x, 4 times 3 equals 12 and on the other side, 4+8 also equals 12. Therefore, to find the length of MN, you would just need to do 4+8 which equals 12

User Vonn
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