M l aggarwal understanding icse mathematics class 8 Solutions for Chapter 17 visualising solid shapes

Exercises in Chapter 17 visualising solid shapes Grade 8

Visualising Solid Shapes Exercise 17.1

Visualising Solid Shapes Exercise 17.2

Questions in Visualising Solid Shapes Exercise 17.1

Match the objects with their shapes:

	Picture (object)	Shape
(i) A tent	[[> widget id=”1″ <]]	(a) A triangular field adjoining a square field.
(ii) A tin	[[> widget id=”2″ <]]	(b) A hemispherical shell.
(iii) A bowl	[[> widget id=”3″ <]]	(c) Two rectangular cross paths inside a rectangular park.
(iv) An agricultural field	[[> widget id=”4″ <]]	(d) A hemisphere surmounted on a cone.
(v) A groove	[[> widget id=”5″ <]]	(e) A circular path around a circular ground.
(vi) A toy	[[> widget id=”6″ <]]	(f) A cylindrical shell.
(vii) A circular park	[[> widget id=”7″ <]]	(g) A cone surmounted on a cylinder.
(viii) A cross path	[[> widget id=”8″ <]]	(h) A cone taken out of a cylinder.

For each of the given solid, the two views are given. Match for each solid the corresponding front and top views.

For the given solid, identify the front, side and top views and write it in the space provided.

For each of the given solid, the three views are given. Identify for each solid the corresponding top, front and side views.

For each given solid, identify the top view, front view and side view.

Draw the front view, side view and top view of the given objects:

Questions in Visualising Solid Shapes Exercise 17.2

Can a polyhedron have for its faces?

(i) 3 triangles?

(ii) 4 triangles?

(iii) a square and four triangles?

Which are prisms among the following?

Verify Euler’s formula for these solids:

Can a polyhedron have 15 faces, 30 edges and 20 vertices?

If a polyhedron has 8 faces and 8 vertices, find the number of edges.

If a polyhedron has 7 faces and 10 vertices, find the number of edges.

Write the number of faces, vertices and edges in

(i) an octagonal prism

(ii) decagonal pyramid.

Using Euler’s formula, complete the following table:

	Faces	Vertices	Edges
(i)	6	–	12
(ii)	–	5	8
(iii)	14	24	–
(iv)	–	16	30
(v)	16	–	42
(vi)	19	19	–

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Chapters in this book

Rational Numbers

Exponents and Powers

Squares and Square Roots

Cubes and Cube Roots

Playing with Numbers

Operation on sets Venn Diagrams

Simple and Compound Interest

Direct and Inverse Variation

Algebraic Expressions and Identities

Linear Equations and Inequalities In one Variable

Understanding Quadrilaterals

Constructions of Quadrilaterals

Symmetry Reflection and Rotation

Visualising Solid Shapes

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