The common portion of two adjacent faces of a cuboid is called __________.
The common portion of two adjacent faces of a cuboid is called edge. Solution The line segment which acts as... View Article
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__________ and __________ are the capital letters of English alphabets that have one line of symmetry but they interchange to each other when rotated through 180°.
M and W are the capital letters of English alphabets that have one line of symmetry but they interchange with... View Article
__________ is a figure that has neither a line of symmetry nor a rotational symmetry.
A scalene triangle is a figure that has neither a line of symmetry nor a rotational symmetry. Solution A figure... View Article
__________ triangle is a figure that has a line of symmetry but lacks rotational symmetry.
An isosceles triangle is a figure that has a line of symmetry but lacks rotational symmetry. Solution A figure has... View Article
Rhombus is a figure that has ______lines of symmetry and has a rotational symmetry of order _______.
Rhombus is a figure that has 2 lines of symmetry and has rotational symmetry of order 2. Solution A figure... View Article
In an isosceles right triangle, the number of lines of symmetry is ________.
In an isosceles right triangle, the number of lines of symmetry is one. Solution A figure has line symmetry if... View Article
Which of the following 3-dimensional figures has the top, side and front as triangles?
Solution Figure (c) has the top, side and front as triangles.
Take a square piece of paper as shown in figure (1). Fold it along its diagonals as shown in figure (2). Again fold it as shown in figure (3). Imagine that you have cut off 3 pieces of the form of congruent isosceles right-angled triangles out of it as shown in figure 4. On opening the piece of paper which of the following shapes will you get?
On opening the piece of paper which of the following shapes will you get? Solution:- Finally, we get a shape... View Article
Which of the following letters of English alphabets have more than 2 lines of symmetry?
The correct answer is Figure (b) Solution ‘O’ has more than 2 lines of symmetry. A figure has line symmetry if... View Article
Which of the following nets is a net of a cylinder?
The correct answer is Figure (c) is a net of a cylinder. Solution When the surface of a three-dimensional shape is... View Article
Which of these nets is a net of a cube?
The correct answer is Figure (b) is a net of a cube. Solution When the surface of a three-dimensional shape... View Article
Which of the following are reflections of each other?
The correct answer is Figure (a) Solution Mirror reflection leads to symmetry, under which the left-right orientation have to be taken... View Article
Which of the following has a line of symmetry?
The correct answer is Figure (c) has a line of symmetry. Solution A figure has line symmetry if there is... View Article
In which of the following cases, a unique triangle can be drawn (a) AB = 4 cm, BC = 8 cm and CA = 2 cm (b) BC = 5.2 cm, ∠B = 90° and ∠C = 110° (c) XY = 5 cm, ∠X = 45° and ∠Y = 60° (d) An isosceles triangle with the length of each equal side 6.2 cm.
The correct answer is (c) XY = 5 cm, ∠X = 45° and ∠Y = 60° Solution A triangle can... View Article
Which of the following sets of triangles could be the lengths of the sides of a right-angled triangle (a) 3 cm, 4 cm, 6 cm (b) 9 cm, 16 cm, 26 cm (c) 1.5 cm, 3.6 cm, 3.9 cm (d) 7 cm, 24 cm, 26 cm
The correct answer is (c) 1.5 cm, 3.6 cm, 3.9 cm Solution From the Pythagoras theorem, Hypotenuse2 = base2 + heihgt2 Consider... View Article
When a torch is pointed towards one of the vertical edges of a cube, you get a shadow of cube in the shape of (a) square (b) rectangle but not a square (c) circle (d) triangle
The correct answer is (b) rectangle but not a square Solution We know that shadow is longer than the object,... View Article
If we rotate a right-angled triangle of height 5 cm and base 3 cm about its base, we get (a) cone of height 3 cm and base 3 cm (b) cone of height 5 cm and base 5 cm (c) cone of height 5 cm and base 3 cm (d) cone of height 3 cm and base 5 cm
The correct answer is (d) cone of height 3 cm and base 5 cm A right circular cone is one whose... View Article
If we rotate a right-angled triangle of height 5 cm and base 3 cm about its height a full turn, we get (a) cone of height 5 cm, base 3 cm (b) triangle of height 5 cm, base 3 cm (c) cone of height 5 cm, base 6 cm (d) triangle of height 5 cm, base 6 cm
The correct answer is (a) cone of height 5 cm, base 3 cm A right circular cone is one whose... View Article
When we cut a corner of a cube as shown in the figure, we get the cutout piece as (a) square pyramid (b) trapezium prism (c) triangular pyramid (d) a triangle
The correct answer is (c) Triangular pyramid A pyramid is a three-dimensional shape. A pyramid has a polygonal base and... View Article
If three cubes each of edge 4 cm are placed end to end, then the dimensions of resulting solid are (a) 12 cm × 4 cm × 4 cm (b) 4 cm × 8 cm × 4 cm (c) 4 cm × 8 cm × 12 cm (d) 4 cm × 6 cm × 8 cm
The correct answer is (a) 12 cm × 4 cm × 4 cm Solution If three cubes each of edge... View Article
