Telangana SCERT Class 6 Maths Chapter 14 Solution – Understanding 3D and 2D Shapes. Here in this post we provides Class 6 Maths Understanding 3D and 2D Shapes Telangana State Board Solution. Telangana State Board English Class VI Medium Students can download this Solution to Solve out Improve Your Learning Questions and Answers.
Telangana State Board Class 6 Maths Chapter 14 Understanding 3D and 2D Shapes Solution:
EXERCISE-14.1
1.) A triangular pyramid has a triangle at its base. It is also known as a tetrahedron. Find the number of
Faces : ____________
Edges : ____________
Vertices : ____________
ANSWER:
Given, triangular Pyramid.
We have to find Faces, Edges and Vertices of triangular Pyramid.
We know,
A pyramid is a solid shape with a base and a point vertex, the other facesare triangles. All the triangular faces meet at vertex of the prism.
Faces:4
Edges:6
Vertices: 4
2.) A square pyramid has a square at its base. Find the number of
Faces : ____________
Edges : ____________
Vertices : ____________
ANSWER:
Given, Square Pyramid.
We have to find Faces, Edges and Vertices of Square Pyramid.
We know,
A pyramid is a solid shape with a base and a point vertex, the other faces are triangles. All the triangular faces meet at vertex of the prism.
Faces: 5
Edges: 8
Vertices: 5
3.) Fill the table
ANSWER:
i) Cone:
Number of Curved Surfaces: 1
Number of plane Surfaces: 1
Number of Vertices: 1
ii) Cylinder:
Number of Curved Surfaces: 1
Number of plane Surfaces: 2
Number of Vertices: No vertices
iii) Sphere:
Number of Curved Surfaces: 1
Number of plane Surfaces: No plane Surfaces
Number of Vertices: No vertices
4.) A triangular prism is often in the shape of a kaleidoscope. It has triangular faces.
No. of triangular Faces : ____________
No. of rectangular Faces : ____________
No. of Edges : ____________
No. of Vertices : ____________
ANSWER:
Given a triangular prism.
We have to find No. of triangular Faces, No. of rectangular Faces,No. of Edges, No. of Vertices of triangular prism.
No. of triangular Faces: 2
No. of rectangular Faces: 3
No. of Edges:9
No. of Vertices: 6
EXERCISE – 14.2
1.) Examine whether the following are polygons if not why?
ANSWER:
Here, we have to check the given figure is polygon or not.
We know,
A figure is a polygon if it is a closed figure, formed with a definite number of straight lines
The given figure is not polygon. Because given figure is not closed.
ANSWER:
Here, we have to check the given figure is polygon or not.
We know,
A figure is a polygon if it is a closed figure, formed with a definite number of straight lines
The given figure is polygon.
ANSWER:
Here, we have to check the given figure is polygon or not.
We know,
A figure is a polygon if it is a closed figure, formed with a definite number of straight lines
The given figure is not polygon. Because given figure has not straight lines.
2.) Count the number of sides of the polygons given below and name them:
ANSWER:
Here, we have to count sides of the polygons of given figure.
Given figure has 5 sides.
Given figure is called as pentagon.
ANSWER:
Here, we have to count sides of the polygons of given figure.
Given figure has 8 sides.
Given figure is called as octagon.
ANSWER:
Here, we have to count sides of the polygons of given figure.
Given figure has 6 sides.
Given figure is called as hexagon.
ANSWER:
Here, we have to count sides of the polygons of given figure.
Given figure has 3 sides.
Given figure is called as triangle.
3.) Identify the regular polygons among the figures given below:
ANSWER:
We know,
A polygon with all equal sides, and all equal angles is called a regular polygon.
Square: A quadrilateral withall sides and all angles equal.
Square is a regular polygon.
Hexagon: Hexagon with all sides and all angles equal.
Hexagon is a regular polygon.
Equilateral triangle: A triangle with all sides and all angles equal
Equilateral triangle is a regular polygon.