# how to make parallelogram properties – maths tlm working model – diy – geometry tlm

In this post we write about making of the parallelogram properties maths tlm working model – diy – geometry tlm using cardboard and color paper

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Creating a working model to demonstrate the properties of a parallelogram using cardboard and color paper in a rotatable format can be a great educational tool.

Here’s a step-by-step guide to build this model:

### Materials Needed:

• Cardboard (for the base and structure)
• Color paper (for detailing and labeling)
• Brass fasteners (to create the rotatable joints)
• Scissors
• Ruler
• Marker or pen
• Glue or double-sided tape
• Protractor (for measuring angles)

## Video step by step instructions on making of parallelogram properties – maths tlm working model

#### 1. Prepare the Base and Main Structure

1. Base Preparation:
• Cut a large piece of cardboard to serve as the base. This will hold your rotating parallelogram structure.
2. Parallelogram Shapes:
• Cut four strips of cardboard of equal length. These will form the sides of the parallelogram.
• Ensure the strips are of equal length to maintain the parallelogram properties.
3. Corners and Fasteners:
• Use brass fasteners to connect the ends of the cardboard strips together, forming a flexible parallelogram. The fasteners will act as the vertices and allow rotation.

#### 2. Assembly of the Rotatable Parallelogram

1. Connect the Strips:
• Attach two strips together at one end using a brass fastener. Do the same for the other two strips.
• Join the free ends of the two pairs of strips using brass fasteners to form a parallelogram. Ensure all connections are secure but allow rotation.
2. Mounting on Base:
• Attach the parallelogram structure to the base. Use a brass fastener at one vertex to secure it to the cardboard base, allowing the parallelogram to rotate and demonstrate its properties.

#### 3. Detailing and Labeling

1. Color Paper Detailing:
• Cover the cardboard strips with color paper to make the model visually appealing. Use different colors for opposite sides if desired to highlight the properties of the parallelogram.
2. Labeling:
• Use a marker to label the sides, angles, and diagonals of the parallelogram. You can also label the properties such as:
• Opposite sides are equal and parallel.
• Opposite angles are equal.
• Consecutive angles are supplementary.
• Diagonals bisect each other.

#### 4. Demonstration of Properties

1. Rotational Movement:
• Rotate the parallelogram to show that despite the change in shape, the properties remain constant.
• Highlight how the opposite sides remain parallel and equal in length regardless of the angle of rotation.
2. Educational Explanation:
• Explain each property of the parallelogram using the model.
• Demonstrate the relationship between the angles and the sides.
• Use the protractor to measure angles and show that opposite angles are equal and consecutive angles are supplementary.

By following these steps, you can create a functional and interactive working model to demonstrate the properties of a parallelogram.