Test: Geometry - 1 - Class 3 MCQ

The question asked for an example that is not a plane. Here is a brief explanation of the options provided:

• Surface of a floor: This is typically flat and can be considered a plane.
• A blackboard: Generally flat, making it a plane as well.
• Top of a table: This is also a flat surface, qualifying it as a plane.
• Surface of a bottle: Unlike the other options, this surface is curved, which means it does not meet the definition of a plane.

Thus, the correct answer is the surface of a bottle, as it is the only option that is not a plane.

• A square has four corners, known as vertices.
• A rectangle also has four vertices, not "fine" vertices.
• A triangle has three vertices, which is correct.
• A circle has no vertices or sides.

The statement about the rectangle is incorrect because it refers to "fine vertices," which is not a standard term in geometry. Rectangles simply have four vertices, similar to squares.

 Ring has curved edge.

Triangle has three sides

Cuboids is a 3-D shape

A square has four sides four corners.

A shape with six flat faces and twelve straight edges is known as a:

• A square has four equal sides and is a 2D shape.

• A cube is a 3D shape with six equal square faces, twelve edges, and eight vertices.

• A cylinder has curved surfaces and circular bases, not flat faces.

• A cone has a circular base and a single vertex, also lacking flat faces.

The correct answer is a cube.