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Help me with this question

Help me with this question-example-1
User Chrillewoodz
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1 Answer

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Answer:

∆QRS is an obtuse triangle

Explanation:


x + 2x + 8x - 40 = 180 \\ 11x = 220 \\ x = 20


< q = 20 \\ < r = 8(20) - 40 = 120 \\ < s = 2(20) = 40

<R = 120° > 90° which makes this an obtuse triangle

Help me with this question-example-1
User Sharief
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