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NCERT Exemplar Class 7 Maths Unit 12 Practical Geometry, Symmetry and Visualising Solid Shapes

by aglasem
June 20, 2022
in 7th Class
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Candidates can download NCERT Exemplar Class 7 Maths Unit 12 from this page. The exemplar has been provided by the National Council of Educational Research & Training (NCERT) and the candidates can check it from below for free of cost. It contains objective, very short answer type, short answer type, and long answer type questions. Along with it, the answer for each question has also been provided. From the NCERT Exemplar Class 7 Maths Unit 12, candidates can understand the level and type of questions that are asked in the exam.

NCERT Exemplar Class 7 Maths Unit 12 Practical Geometry, Symmetry and Visualising Solid Shapes

NCERT Class 7 Maths Unit 12 is for Practical Geometry, Symmetry and Visualising Solid Shapes. The type of questions that will be asked from NCERT Class 7 Maths Unit 12 are displayed in the below provided NCERT Exemplar Class 7 Maths Unit 12. With the help of it, candidates can prepare well for the examination.

Also Check: NCERT Solutions Class 7 Maths


Main Concepts and Results


Let a line ‘l’ and a point P not lying on it be given. By using properties of a transversal and parallel lines, a line which passes through the point P and parallel to ‘l’, can be drawn.
A triangle can be drawn if any one of the following sets of measurements are given :
(i) Three sides (SSS).
(ii) Two sides and the angle between them (SAS).
(iii) Two angles and a side (AAS) or (ASA).
(iv) The hypotenuse and a leg in the case of a right-angled triangle (RHS).
A figure has line symmetry, if there is a line about which the figure may be folded so that the two parts of the figure will coincide with each other.
Regular polygons have equal sides and equal angles. They have multiple (i.e., more than one) lines of symmetry.
Each regular polygon has as many lines of symmetry as it has sides.
Mirror reflection leads to symmetry, under which the left-right orientation have to be taken care of.


A net is a skeleton-outline of a solid that can be folded to make the solid.
Solid shapes can be drawn on a flat surface. This is called a 2–D representation of a 3–D solid (shape).
Two types of sketches of a solid are possible:
(i) An oblique sketch which does not have proportional measurements.
(ii) An isometric sketch which is drawn on an isometric dot paper. In this sketch of the solid, the measurements are kept proportional.
Different sections of a solid can be viewed in many ways:
(i) By cutting or slicing, the shape, which would result in the cross- section of the solid.
(ii) By observing a 2-D shadow of a 3-D shape.
(iii) By looking at the shape from different positions-the front-view, the side-view and the top-view.


Solved Examples






















Multiple Choice Questions


Class 7 Important Questions for Maths – Practical Geometry, Symmetry and Visualising Solid Shapes


Fill in the Blanks Type Questions


Class 7 Important Questions for Maths – Practical Geometry, Symmetry and Visualising Solid Shapes


True False Type Questions


Class 7 Important Questions for Maths – Practical Geometry, Symmetry and Visualising Solid Shapes


Other Important Type Questions


Class 7 Important Questions for Maths – Practical Geometry, Symmetry and Visualising Solid Shapes


Application





Click here to download NCERT Exemplar Class 7 Maths for Unit 12 Practical Geometry, Symmetry and Visualising Solid Shapes.


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Answers
















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