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Published on: 21/09/2019
Understanding Elementary Shapes
Download CBSE Class 6th Standard CBSE Mathematics question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 6th Standard CBSE Mathematics
Questions + Answers key
Take MCQ Mathematics Test
1.
Do you think it is possible to sketch
(a) an obtuse angled equilateral triangle?
(b) a right angled equilateral triangle
(c) a triangle with two right angles?
Think, discuss and write your conclusions.
2.
Find the number of equilateral triangles in a tetrahedron.
3.
Give some examples of three dimensional shapes. Which you see in your day-to-day life.
4.
Write the revolution for each figure.
5.
Write the revolution for each figure.
6.
Write faces edges and corners in a square pyramid.
7.
State the type of angle formed between the following direction clockwise.
North and South.
8.
How many maximum number of equilateral triangles can you make from.
9 matchsticks
9.
Convert the following into degree.
\(\frac { 2 }{ 9 } \) right angle
10.
Convert the following angles of degrees into fractional right angle 100.
11.
Using the information given, name the right angles in each part of figure.
RS 丄 RW 
12.
Using the information given, name the right angles in each part of figure.
BA 丄 BD 
13.
Is it possible for the same, angle to have two different measures?
14.
Which points in figure, appear to be mid-point of the line segments? When you locate a mid-point, name the two equal line segments formed by it.
15.
Will the measure of \(\angle ABC\) and \(\angle CBD\) make the measure of \(\angle ABD\) in figure.
1.
(a) not possible because each angle of an equilateral triangle is 60° whereas one angle of an obtuse angled triangle is greater than 90°.
(b) not possible because each angle of an equilateral triangle is 60° whereas one angle of a right angled triangle is 90°.
(c) not possible because at the most one angle of a triangle can be of 90°.
2.
We know that, tetrahedron is a regular pyramid made up of 4 equilateral triangles.
3.
Some three dimensional shapes are given below:
4.
\(\frac { 1 }{ 2 } \) revolution
5.
\(\frac { 3 }{ 4 } \) revolution
6.
4 triangular faces, 8 edges, 5 corners
7.
180°(straight angle)
8.
4 equilateral triangles
9.
We know that,1 right angle = 90°
\(\frac { 2 }{ 9 } \) right angle =\(\frac { 2 }{ 9 } \times 90° = 20°\)
10.
We know that, 1 right angle = 90°
\({ 1 }°=\frac { 1 }{ 90 } \) right angle
\({ 10 }°=\frac { 10° }{ { 90 }° } =\left( \frac { 1 }{ 9 } \right) \) right angle
11.
\(\angle SRW = \angle RTS = \angle RTW = 90°\)
12.
The right angles in each part of the given figure are as follow:
\(\angle ABD = 90°\)
13.
No, an angle cannot have two different measurements.
14.
In the figure, There is no mid-point in \(\overline{ AB } .\)
15.
Here, \(\angle ABD = \angle ABC + \angle CBD\)
Hence, the measure of \(\angle ABC\) and \(\angle CBD\) makes the measure of \(\angle ABD.\)
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