Mathematics · Pedagogy of Mathematics
A Grade 6 student uses a protractor to measure angles on a worksheet. While doing so, they measure an 80° angle as 100°, a 60° angle as 120°, and a 70° angle as 110°. What is the most appropriate reason for this error?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The student believes that both complementary and supplementary measures have the exact same meaning.
- 2The student is not aligning the vertex of the angle with the center of the protractor.
- 3The student has not grasped the skill to read the scale of the protractor in the correct direction.✓
- 4The student is holding the protractor upside down.
Correct answer
The student has not grasped the skill to read the scale of the protractor in the correct direction.
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