Chapter 8 · Class 6 ICSE · MCQ Test
Basic Geometry (Points, Lines & Angles) MCQ Test — Class 6 ICSE
Practice 10 multiple-choice questions with instant answer reveal and explanations.
Basic Geometry (Points, Lines & Angles) — MCQ Questions
1How many endpoints does a line segment have?
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Answer: 2
Hint: A line segment is a part of a line that has a definite beginning and end.
Solution:
A line segment is a part of a line bounded by two distinct points called endpoints.
Therefore, a line segment has exactly 2 endpoints.
2How many endpoints does a ray have?
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Answer: 1
Hint: A ray starts at a fixed point and extends infinitely in one direction.
Solution:
A ray has a fixed starting point called its endpoint and extends infinitely in one direction.
So a ray has exactly 1 endpoint.
3An angle that measures exactly 90 degrees is called a:
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Answer: Right angle
Hint: This angle looks like the corner of a book or a door frame.
Solution:
An angle that measures exactly 90 degrees is called a right angle.
It is often marked with a small square at the vertex.
4An angle measuring 45 degrees is classified as:
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Answer: Acute angle
Hint: Any angle less than 90 degrees falls into this category.
Solution:
An acute angle is an angle that measures more than 0 degrees and less than 90 degrees.
Since 45 < 90, the angle of 45 degrees is an acute angle.
5An angle measuring 120 degrees is classified as:
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Answer: Obtuse angle
Hint: This type of angle is greater than 90 degrees but less than 180 degrees.
Solution:
An obtuse angle is an angle that measures more than 90 degrees and less than 180 degrees.
Since 90 < 120 < 180, the angle of 120 degrees is an obtuse angle.
6A straight angle measures:
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Answer: 180 degrees
Hint: A straight angle looks like a straight line.
Solution:
A straight angle is formed when the two arms of the angle point in exactly opposite directions.
It measures exactly 180 degrees and looks like a straight line.
7Two lines that never meet no matter how far they are extended are called:
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Answer: Parallel lines
Hint: Think of railway tracks that always stay the same distance apart.
Solution:
Parallel lines are lines in the same plane that never intersect, no matter how far they are extended.
They remain at the same distance from each other at every point.
8Two lines that cross each other at exactly 90 degrees are called:
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Answer: Perpendicular lines
Hint: These lines form a right angle where they meet.
Solution:
When two lines intersect at a right angle (90 degrees), they are called perpendicular lines.
The plus sign (+) is a good example of perpendicular lines.
9A triangle with all three sides equal is called:
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Answer: Equilateral triangle
Hint: 'Equi' means equal and 'lateral' means sides.
Solution:
A triangle with all three sides of equal length is called an equilateral triangle.
In an equilateral triangle, all three angles are also equal, each measuring 60 degrees.
10A triangle with two sides equal is called:
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Answer: Isosceles triangle
Hint: This triangle has exactly one pair of equal sides.
Solution:
A triangle with exactly two sides of equal length is called an isosceles triangle.
The angles opposite to the equal sides are also equal.
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Tips for Basic Geometry (Points, Lines & Angles) MCQs
- 1Read each question carefully and identify what is being asked before looking at the options.
- 2Try to solve the problem mentally or on paper first, then match your answer with the options.
- 3Use elimination — rule out clearly wrong options to improve your chances even when unsure.
- 4Check units, signs, and edge cases — these are common traps in Basic Geometry (Points, Lines & Angles) MCQs.
- 5Review your mistakes after completing the test to build lasting understanding.
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