Your cart is empty.
Practice each question, then open the answer or worked solution.
__________ triangle is a figure that has a line of symmetry but lacks rotational symmetry.
Ans: The triangle which has only one line of symmetry and no rotational symmetry is the isosceles triangle. Therefore, the Isosceles triangle is a figure that has a line of symmetry but lacks rotational symmetry.
__________ is a figure that has neither a line of symmetry nor a rotational symmetry.
Ans: The angles of a scalene triangle have different measures. Therefore, the Scalene triangle is a figure that has neither a line of symmetry nor a rotational symmetry.
__________ and __________ are the capital letters of English alphabets that have one line of symmetry but they interchange to each other when rotated through ${\mathbf{180^\circ }}$.
Ans: M and W are the capital letters of English alphabets that have one line of symmetry but they interchange to each other when rotated through ${\mathbf{180^\circ }}$.
The common portion of two adjacent faces of a cuboid is called __________.
Ans: Any two adjacent faces of a cuboid meet in a line segment, which is called an edge of the cuboid. Therefore, the common portion of two adjacent faces of a cuboid is called edge.
A plane surface of a solid enclosed by edges is called __________ .
Ans: A face is any of the individual flat surfaces of a solid object. Therefore, a plane surface of a solid enclosed by edges is called face.
The corners of solid shapes are called its __________.
Ans: Solid shapes have attributes like face, vertices, edges that describe them. Therefore, the corners of solid shapes are called its vertices.
A solid with no vertex is __________.
Ans: Sphere is the only solid figure with zero vertex, zero edge and one curved surface.
Therefore, a solid with no vertex is a sphere.
A triangular prism has __________ faces, __________ edges and __________ vertices.
Ans: A triangular prism is polyhedron and a three-dimensional shape.
A triangular prism has $5$ faces, $9$ edges and $6$ vertices.
A triangular pyramid has __________ faces, __________ edges and __________vertices.
Ans: A triangular pyramid is a pyramid having a triangular base. A triangular pyramid has $4$ faces, $6$ edges and $4$ vertices.
A square pyramid has __________ faces, __________ edges and __________ vertices.
Ans: A square pyramid is a pyramid having a square base. A square pyramid has $5$ faces, $8$ edges and $5$ vertices.