Searching for a lost explorer in a dense forest, Emek and Luna followed signal markers tied to tree branches. At each marker, they used a simple angle-measuring tool to check the direction. The rescue guide said to follow markers with angles greater than 90° but smaller than 150°. They compared markers showing 85°, 110°, and 145° and chose the correct route each time. Their careful measurements kept them on the intended path, and they found the explorer safely before sunset.
Challenges
Challenge 1 of 5
Challenges
Challenge 1 of 4
Hint
The angle must be more than 90° and less than 150°.
The rescue guide said to follow markers with angles greater than 90° but smaller than 150°. Which marker should Emek and Luna follow?
85°90°110°150°Correct! 110° is greater than 90° and less than 150°.
Check that the angle is strictly greater than 90° and strictly less than 150°.
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Hint
Subtract the smaller angle from the larger angle.
Emek measured two signal markers: 145° and 110°. What is the difference between these two angle measures?
Correct! The difference is 35°.
Find how many degrees more 145° is than 110°.
Next🎉 Congrats! You got this question!
Hint
Check whether each angle is greater than 90° and less than 150°.
A student says, "Because 145° is larger than 110°, it should not be followed." Based on the rescue guide, which statement is correct?
The student is correct because only the smallest angle should be chosen.The student is incorrect because both 110° and 145° fit the guide.The student is correct because 145° is a right angle.The student is incorrect because only 85° fits the guide.Correct! Both 110° and 145° satisfy the guide, so either marker could be followed.
The guide is based on an angle range, not on choosing the smallest angle.
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