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Practice Questions: Geometrical Shapes | Science Olympiad for Class 5 PDF Download

Q1: How many straight sides does a polygon need at minimum?
Ans: 3

A polygon needs at least three straight sides to make a closed shape.

Q2: What is the sum of the angles of a triangle?
Ans: 180 degrees

In a triangle, the sum of all angles is always 180 degrees.

Q3: Which two-dimensional shape has four sides?
Ans: Quadrilateral

A quadrilateral is a shape with four sides.

Q4: How many sides does a hexagon have?
Ans: 6

A hexagon is a six-sided geometric figure.

Q5: What is the sum of the angles in a pentagon?
Ans: 540 degrees

In a pentagon, the sum of all the interior angles is 540 degrees.

Q6: How many corners or edges does a circle have?
Ans: None

A circle is a round shape with no corners or edges.

Q7: What is the sum of the angles in a decagon?
Ans: 1440 degrees

A decagon has ten sides, and the sum of its angles is 1440 degrees.

Q8: What is the sum of the angles in a quadrilateral?
Ans: 360 degrees

In a quadrilateral, the sum of all the angles is 360 degrees.

Q9: Which shape has eight sides?
Ans: Octagon

An octagon has eight sides.

Q10: What is the sum of the angles in a nonagon?
Ans: 1260 degrees

A nonagon has nine sides, and the sum of its angles is 1260 degrees.

Q11: Which shape has exactly five sides?
Ans: Pentagon

A pentagon is a five-sided geometric shape.

Q12: What is a shape that begins and ends at the same point without gaps called?
Ans: Closed-sided figure

A closed-sided figure is a shape that begins and ends at the same point, forming a complete loop.

Q13: How many sides does a heptagon have?
Ans: 7

A heptagon is a seven-sided figure.

Q14: What is the sum of the angles in an octagon?
Ans: 1080 degrees

In an octagon, the sum of all angles is 1080 degrees.

Q15: Which shape is round and does not have any straight lines or corners?
Ans: Circle

A circle is a round shape with no straight lines or corners.

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FAQs on Practice Questions: Geometrical Shapes - Science Olympiad for Class 5

1. What are the different types of geometrical shapes?
Ans. There are many types of geometrical shapes, including 2D shapes like circles, squares, rectangles, triangles, and polygons. 3D shapes include cubes, spheres, cylinders, and pyramids. Each shape has its own properties and characteristics.
2. How can we identify different geometrical shapes?
Ans. We can identify geometrical shapes by looking at their properties. For example, a triangle has three sides and three angles, while a square has four equal sides and four right angles. Observing the number of sides, angles, and symmetry helps in recognizing shapes.
3. What is the difference between 2D and 3D shapes?
Ans. The main difference is that 2D shapes have only two dimensions (length and width) and lie flat on a surface, while 3D shapes have three dimensions (length, width, and height) and occupy space. Examples of 2D shapes include squares and circles, while examples of 3D shapes are cubes and spheres.
4. How do we calculate the area of common geometrical shapes?
Ans. The area can be calculated using specific formulas for each shape. For example, the area of a rectangle is found by multiplying its length by its width (Area = length × width), while the area of a triangle is calculated as (Area = 1/2 × base × height).
5. Why is it important to learn about geometrical shapes in Class 5?
Ans. Learning about geometrical shapes is important because it helps build a foundation for understanding more complex concepts in mathematics and science. It also enhances spatial reasoning, improves problem-solving skills, and is useful in everyday life, such as in art, architecture, and engineering.
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