Solve exercise 1 on page 140, 141 of Math 4 textbook.

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Ngày cập nhật gần nhất: 15/4/2026

Solving exercise 1 on page 140, 141 of Math 4 textbook is part of the Rhombus section: Identify which shape is a rhombus.

Guidance for solving exercise 1 on page 140, 141 of Math 4 textbook

Solution Method:
- A rhombus is a parallelogram with all four sides equal or a parallelogram with two perpendicular diagonals is a rhombus.
- A rectangle is a quadrilateral with four right angles or a parallelogram with two equal diagonals is a rectangle.

Answer:
Shapes 1 and 3 are rhombuses.
Which shape is a rectangle?
Additional information: Shapes 2, 4, and 5 are not rhombuses because they do not have four equal sides.
Shapes 1, 3, and 4 are not rectangles because they do not have right angles.
Shape 5 is not a rectangle because it lacks four right angles.

Here is the guide to solving exercise 1 on page 140, 141 of Math 4 textbook in the Concentrated Practice section. Additionally, this section includes 2 more exercises: Solve exercise 2 on page 140, 141 of Math 4 textbook and Solve exercise 3 on page 140, 141 of Math 4 textbook. Check out the instructions for solving Math 4 exercises on pages 140, 141 to excel in the subject of Math for 4th grade!

Frequently Asked Questions

What characteristics define a rhombus according to the Math 4 textbook?

A rhombus is defined as a parallelogram with all four sides of equal length. Additionally, a rhombus can also be identified by having two diagonals that intersect at right angles. These characteristics are essential for recognizing rhombuses in various shapes.

Which shapes from the exercise are identified as rhombuses?

According to the exercise on pages 140 and 141 of the Math 4 textbook, Shapes 1 and 3 are identified as rhombuses. They meet the criteria of having all four sides equal in length, distinguishing them from other shapes.

How can you determine if a shape is a rectangle in the Math 4 textbook?

To determine if a shape is a rectangle, it must be a quadrilateral with four right angles. Alternatively, it can also be recognized as a parallelogram with two equal diagonals, fulfilling the necessary conditions for classification.

What shapes are confirmed not to be rhombuses in the exercise?

Shapes 2, 4, and 5 are confirmed not to be rhombuses as they do not possess four equal sides. This classification helps to differentiate these shapes from true rhombuses based on their geometric properties.

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