Class 6 Understanding Elementary Shapes — practice questions with answers
Geometry · 5 sample questions from the school syllabus. Try each one, then open the answer and the worked solution.
1. What type of angle is 120 degrees?
- AAcute
- BRight
- CObtuse
- DStraight
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Answer: C) Obtuse
An angle greater than 90 degrees but less than 180 degrees is obtuse, so 120 degrees is obtuse.
2. Which angle is larger than a straight angle?
- AAcute
- BRight
- CObtuse
- DReflex
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Answer: D) Reflex
A reflex angle is larger than a straight angle (more than 180 degrees), while acute, right, and obtuse angles are all less than 180 degrees.
3. Which term describes two lines that lie in the same plane and never meet, no matter how far they are extended?
- AParallel lines
- BPerpendicular lines
- CIntersecting lines
- DConcurrent lines
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Answer: A) Parallel lines
Lines in the same plane that never intersect are called parallel lines.
4. Which geometric figure has one fixed endpoint and extends without end in one direction?
- ARay
- BLine segment
- CLine
- DAngle
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Answer: A) Ray
A ray has one endpoint and extends endlessly in one direction.
5. Which statement about a straight angle is correct?
- AIt measures exactly 90 degrees.
- BIt measures exactly 180 degrees and looks like a straight line.
- CIt measures more than 180 degrees.
- DIt measures less than 90 degrees.
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Answer: B) It measures exactly 180 degrees and looks like a straight line.
A straight angle measures exactly 180 degrees; its two rays point in opposite directions, forming a straight line.