Straight Angle Practice

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Question 1
Which of the following are straight angles?

identify all the obtuse angles

Answer

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A. I and IV
B. I and II
C. II and IV
D. II and III
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Step by Step Solution 

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Step 1
Angle I is definitely straight angle as it is equals to 180°.
straight-angle-I.png
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Step 2
As for angle II, it is not a straight angle. This is because this angle is not equals to 180°.
Angle II is not an obtuse angle

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Step 3
Angle III is definitely not a straight angle.
Angle III is not an obtuse angle
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Step 4
Angle IV is a straight angle.
Angle IV is an obtuse angle
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Step 5
Clearly, only I and IV are straight angles. Hence, the answer is A.
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