Protractor
(เครื่องมือวัดมุมโปรแทรกเตอร์)
Definition
Protractor (เครื่องมือวัดมุมโปรแทรกเตอร์) Tool
A protractor is a measuring instrument used to measure angles in degrees, commonly used in geometry, engineering, and drafting.
Expertise Level
Level 1
Basic
1. Can recognize and handle a protractor properly.
2. Able to measure simple angles using a protractor.
3. Understands the scale and markings on the protractor.
Level 2
Intermediate
1. Can accurately measure both acute and obtuse angles.
2. Able to use a protractor to draw angles of specific degrees.
3. Understands how to align the protractor's baseline correctly with the vertex.
Level 3
Advanced
1. Can apply the protractor in complex geometric constructions and problem-solving.
2. Understands the use of protractor in combination with other tools like rulers and compasses.
3. Able to verify and calculate angle measurements in practical and technical contexts.
