Page 2 - CH - 2 - LN - 2.2
P. 2
From the superimposition point of view, if two angles are placed on top of each other, and
their vertices and rays align perfectly, then the angles are equal in size.
Comparing Angles without Superimposition
What if you don’t want to superimpose the angles directly? For example, imagine two cranes arguing
about who can open their mouth wider.
You can:
1. Use a transparent circle: Place it on one angle so that the center of the circle is at the vertex
of the angle.
2. Mark points on the circle where the arms of the angle pass through.
3. Move the circle to the second angle: Align the vertex with the center of the circle and check
where the arms pass through the circle.
This method can help you determine which angle is larger without needing to physically overlap the
angles. It’s a handy way to compare angles, especially when superimposition isn’t possible.
Making Rotating Arms
You can create rotating arms using simple materials like paper straws and a paper clip.
Follow these steps:
Step 1: Take two paper straws and a paper clip.
Step 2: Insert the straws into the two ends of the paper clip.