Verification of Triangle Angle Sum Property
The triangle angle sum property states that the sum of the three interior angles of a triangle is always 180 degrees. To verify this property using a paper cutting and pasting method, follow the steps below:

Materials Needed:
- A sheet of paper
- Scissors
- Glue

Procedure:
1. Draw a triangle on the sheet of paper.
2. Cut out the triangle along its edges using the scissors.
3. Carefully remove the three angles of the triangle.
4. Place the three angles together such that they share a common point.
5. You will notice that the three angles fit together perfectly, forming a straight line.
6. As a straight line measures 180 degrees, this visually confirms that the sum of the three angles of the triangle is indeed 180 degrees.

Conclusion:
By physically cutting out and pasting the angles of a triangle, we can observe that they form a straight line measuring 180 degrees. This experiment helps in understanding and verifying the triangle angle sum property, which is a fundamental concept in geometry.