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All questions of Geometrical Shapes for Class 5 Exam

A nonagon is a polygon with how many sides?
  • a)
    7
  • b)
    8
  • c)
    9
  • d)
    10
Correct answer is option 'C'. Can you explain this answer?

Gargi Rane answered
Understanding Polygons
Polygons are closed plane figures formed by three or more sides. Each side is a straight line segment, and the points where the sides meet are called vertices.
What is a Nonagon?
A nonagon is a specific type of polygon that is defined by the number of its sides.
Number of Sides
- The prefix “nona-” comes from Latin, meaning “nine.”
- Therefore, a nonagon has exactly 9 sides and 9 vertices.
Visualizing a Nonagon
To better understand a nonagon, consider the following points:
- Shape: A nonagon has a distinct geometric shape that can be regular (all sides and angles are equal) or irregular (sides and angles are not equal).
- Examples: Nonagons can be found in various architectural designs and art.
Comparison with Other Polygons
Here’s a quick comparison with other common polygons:
- Triangle: 3 sides
- Quadrilateral: 4 sides
- Pentagon: 5 sides
- Hexagon: 6 sides
- Heptagon: 7 sides
- Octagon: 8 sides
- Nonagon: 9 sides (correct answer)
- Decagon: 10 sides
Conclusion
In summary, a nonagon is a polygon with 9 sides. Recognizing the prefix can help you identify other polygons as well. Understanding these shapes is essential in geometry and can enhance your spatial awareness in mathematics and real-world applications.

How many sides does a quadrilateral have?
  • a)
    2
  • b)
    3
  • c)
    4
  • d)
    5
Correct answer is option 'C'. Can you explain this answer?

Subset Academy answered
A quadrilateral has four sides. Examples of quadrilaterals include squares, rectangles, and rhombuses.

Which of the following is an example of a closed-sided figure?
  • a)
    Line
  • b)
    Triangle
  • c)
    Ray
  • d)
    Half-circle
Correct answer is option 'B'. Can you explain this answer?

Gunjan Lakhani answered
A closed-sided figure is one where all the sides connect to form a complete shape without any open ends. A triangle is a perfect example as it has three connected sides.

How many corners does a circle have?
  • a)
    1
  • b)
    2
  • c)
    0
  • d)
    Infinite
Correct answer is option 'C'. Can you explain this answer?

Rahul Kumar answered
A circle has no corners. It is a smooth, continuous curve with no edges or vertices.

Which of these figures is a quadrilateral?
  • a)
    Triangle
  • b)
    Hexagon
  • c)
    Rectangle
  • d)
    Pentagon
Correct answer is option 'C'. Can you explain this answer?

Rahul Kumar answered
A rectangle is a quadrilateral because it has four sides. All rectangles, squares, and rhombuses are examples of quadrilaterals.

Which of the following shapes does not have corners?
  • a)
    Square
  • b)
    Triangle
  • c)
    Circle
  • d)
    Rectangle
Correct answer is option 'C'. Can you explain this answer?

A circle is a round-shaped figure with no corners or edges, unlike polygons such as squares, triangles, or rectangles.

Which of the following is an open-sided figure?
  • a)
    Rectangle
  • b)
    Line
  • c)
    Circle
  • d)
    Pentagon
Correct answer is option 'B'. Can you explain this answer?

An open-sided figure is one where the lines do not connect to form a complete shape. A line does not connect at both ends, making it an open figure.

Which shape has eight sides?
  • a)
    Heptagon
  • b)
    Hexagon
  • c)
    Octagon
  • d)
    Nonagon
Correct answer is option 'C'. Can you explain this answer?

Rohini Seth answered
An octagon is a polygon with eight sides. A well-known example of an octagon is a stop sign.

A shape with five sides is called a:
  • a)
    Pentagon
  • b)
    Hexagon
  • c)
    Heptagon
  • d)
    Octagon
Correct answer is option 'A'. Can you explain this answer?

A pentagon is a polygon with five sides. The sum of the interior angles of a pentagon is 540 degrees.

What is the sum of the interior angles of a hexagon?
  • a)
    540 degrees
  • b)
    720 degrees
  • c)
    900 degrees
  • d)
    1080 degrees
Correct answer is option 'B'. Can you explain this answer?

Rohini Seth answered
The sum of the interior angles of a hexagon is 720 degrees. You can calculate this using the formula: (n-2) × 180, where n is the number of sides.

What is the sum of the interior angles of a decagon?
  • a)
    900 degrees
  • b)
    1080 degrees
  • c)
    1260 degrees
  • d)
    1440 degrees
Correct answer is option 'D'. Can you explain this answer?

Edu Impact answered
A decagon has 10 sides, and the sum of its interior angles is 1440 degrees, calculated by (n-2) × 180, where n is 10.

The angles in a circle add up to:
  • a)
    180 degrees
  • b)
    270 degrees
  • c)
    360 degrees
  • d)
    540 degrees
Correct answer is option 'C'. Can you explain this answer?

Edu Impact answered
The total of the angles in a circle is 360 degrees. This is because a circle is made up of an infinite number of small angles that sum to 360 degrees.

How many sides does a heptagon have?
  • a)
    5
  • b)
    6
  • c)
    7
  • d)
    8
Correct answer is option 'C'. Can you explain this answer?

A heptagon is a polygon with seven sides. The sum of the interior angles of a heptagon is 900 degrees.

Which of the following is not a polygon?
  • a)
    Circle
  • b)
    Hexagon
  • c)
    Pentagon
  • d)
    Triangle
Correct answer is option 'A'. Can you explain this answer?

Subset Academy answered
A circle is not a polygon because it does not have straight sides. Polygons are defined as closed figures with straight sides.

What is the minimum number of sides required to form a polygon?
  • a)
    2
  • b)
    3
  • c)
    4
  • d)
    5
Correct answer is option 'B'. Can you explain this answer?

A polygon is a closed figure with straight sides, and it needs at least three sides to form a closed shape. Hence, a triangle is the simplest polygon.

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