SaiBook.us Geometry

Home Course Section

Schedule Admission Social

Step-2

Title: 3D-shapes

Grade: 4-a Lesson: S2-L8

Explanation: Hello Students, time to practice and review the steps for the problem.

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Nani makes a shape with 2 triangles and three rectangles. What shape did she make?
2	Step	Nani having 2 triangles and 3 rectangles.
3	Step	He placed 2 triangles are parallel positions the 3 rectangle widths are joined at both sides with 2 triangle sides.
4	Step	Because the three sides of a tringle and the width of a rectangle are equal in shape	Rectangle width = triangle side length
5	Step	The three resulting images have five faces, nine edges, and six vertices.
6	Step	So the image like triangular prism.
7	SumUp	Can you summarize what you’ve understood in the above steps?
8	Choice.A	The circle has only one face, so it cannot be the answer. Therefore, it is incorrect	Cube
9	Choice.B	A triangular prism has 8 vertices, 9 edges and 5 faces,it matches the answer. Therefore, it is the correct answer	Triangular Prism
10	Choice.C	A square has 4 sides, 4 vertices, and 8 edges. Therefore, the answer is incorrect	Square
11	Choice.D	A cuboid has 6 faces, 8 vertices, and 12 edges.Therefore, the answer is incorrect	Cuboid
12	Answer	Option	B
13	SumUp	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

Nani makes a shape with 2 triangles and three rectangles. What shape did she make?

Step

Nani having 2 triangles and 3 rectangles.

Step

He placed 2 triangles are parallel positions the 3 rectangle widths are joined at both sides with 2 triangle sides.

Step

Because the three sides of a tringle and the width of a rectangle are equal in shape

Rectangle width = triangle side length

Step

The three resulting images have five faces, nine edges, and six vertices.

Step

So the image like triangular prism.

SumUp

Can you summarize what you’ve understood in the above steps?

Choice.A

The circle has only one face, so it cannot be the answer. Therefore, it is incorrect

Cube

Choice.B

A triangular prism has 8 vertices, 9 edges and 5 faces,it matches the answer. Therefore, it is the correct answer

Triangular Prism

Choice.C

A square has 4 sides, 4 vertices, and 8 edges. Therefore, the answer is incorrect

Square

Choice.D

A cuboid has 6 faces, 8 vertices, and 12 edges.Therefore, the answer is incorrect

Cuboid

Answer

Option

SumUp

Can you summarize what you’ve understood in the above steps?