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All questions of Angles for Class 5 Exam

What does an angle represent in geometry?
  • a)
    The space inside a 3D object
  • b)
    The meeting point of two lines
  • c)
    A straight line
  • d)
    The surface of a circle
Correct answer is option 'B'. Can you explain this answer?

Rahul Kumar answered
An angle is formed when two lines meet at a common point. The space between these two lines, measured in degrees, represents the angle. Angles can vary based on how much the two lines open up from each other.
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A triangle has angles measuring 50°, 60°, and 70°. What kind of triangle is it based on its angles?
  • a)
    Right triangle
  • b)
    Obtuse triangle
  • c)
    Acute triangle
  • d)
    Isosceles triangle
Correct answer is option 'C'. Can you explain this answer?

Subset Academy answered
A triangle where all angles are less than 90 degrees is called an acute triangle. Since each angle here is under 90°, this triangle qualifies as an acute triangle.

What type of angle is exactly 90 degrees?
  • a)
    Acute angle
  • b)
    Obtuse angle
  • c)
    Straight angle
  • d)
    Right angle
Correct answer is option 'D'. Can you explain this answer?

Torcia Education answered
A right angle is exactly 90 degrees. It is often seen where two lines meet to form a perfect corner, like the corner of a square. This angle represents a "quarter turn" in geometry.

How many degrees is the angle formed by two lines in a straight angle?
  • a)
    90°
  • b)
    120°
  • c)
    180°
  • d)
    360°
Correct answer is option 'C'. Can you explain this answer?

Stoneridge Institute answered
A straight angle measures exactly 180 degrees. This type of angle appears as a straight line, dividing a circle in half.

Which of the following angles is considered an obtuse angle?
  • a)
    30°
  • b)
    45°
  • c)
    90°
  • d)
    135°
Correct answer is option 'D'. Can you explain this answer?

Stoneridge Institute answered
An obtuse angle is one that measures more than 90 degrees but less than 180 degrees. The 135° angle fits this criterion, as it’s larger than a right angle but doesn’t reach a straight angle.

If two angles are supplementary and one of them is 120°, what is the measure of the other angle?
  • a)
    60°
  • b)
    180°
  • c)
    120°
  • d)
    90°
Correct answer is option 'A'. Can you explain this answer?

Edu Impact answered
Supplementary angles add up to 180°. If one angle is 120°, the other angle will be:
180°− 120° = 60°. Therefore, the measure of the other angle is 60°, which makes Option A the correct answer.

If the hands of a clock show 3 o'clock, what type of angle is formed between them?
  • a)
    Acute angle
  • b)
    Right angle
  • c)
    Obtuse angle
  • d)
    Straight angle
Correct answer is option 'B'. Can you explain this answer?

Stoneridge Institute answered
At 3 o’clock, the minute and hour hands form a 90-degree angle, which is a right angle. On a clock, each number represents 30 degrees, so moving from 12 to 3 covers 90 degrees.

Which of the following angles is not possible in geometry?
  • a)
    An angle greater than 360°
  • b)
    A reflex angle
  • c)
    An acute angle
  • d)
    A right angle
Correct answer is option 'A'. Can you explain this answer?

Edu Impact answered
An angle greater than 360° is not possible in basic geometry, as angles are measured within a full circle, which is 360°. Any angle greater than this is not considered standard for basic angle classification. Hence, Option A is the correct answer.

What tool is typically used to measure angles in geometry?
  • a)
    Ruler
  • b)
    Compass
  • c)
    Protractor
  • d)
    Calculator
Correct answer is option 'C'. Can you explain this answer?

Torcia Education answered
A protractor is used to measure angles in degrees. It has a curved scale that lets students measure different angles accurately, such as 30°, 45°, 90°, and so on.

Chapter doubts & questions for Angles - Math Olympiad for Class 5 2025 is part of Class 5 exam preparation. The chapters have been prepared according to the Class 5 exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Class 5 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.

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