What do you mean by protractor?

: an instrument used for drawing and measuring angles. protractor. noun.

What are the two types of protractor?

Types of Protractors

  • Semicircular. The semicircular protractor contains two scales each graduated up to 180 degrees in opposite directions for convenient reading from both left and right.
  • Circular.
  • Military.
  • Steel.
  • Universal Vernier Bevel.
  • Optical Bevel.

What are protractors used for?

GeometryProtractor / Calculation supportedGeometry is, with arithmetic, one of the oldest branches of mathematics. It is concerned with properties of space that are related with distance, shape, size, and relative position of figures. A mathematician who works in the field of geometry is called a geometer. Wikipedia

What are the types of protractor?

Bevel protractor
Two sided protractor
Protractor/Variant

What is another name for a protractor?

In this page you can discover 6 synonyms, antonyms, idiomatic expressions, and related words for protractor, like: set-square, tape-measure, clinometer, straight-edge, straightedge and compass.

Which is reflex angle?

A reflex angle is an angle that is more than 180 degrees and less than 360 degrees. For example, 270 degrees is a reflex angle. In geometry, there are different types of angles such as acute, obtuse and right angles, which are under 180 degrees.

Why is it called protractor?

protractor (n.) 1610s, “one who lengthens (an action),” Modern Latin agent noun from Latin protrahere “to draw forward” (see protraction). Medieval Latin protractor meant “one who calls or drags another into court.” The surveying sense of “instrument for measuring and drawing angles on paper” is recorded from 1650s.

How are protractors made?

2 Method 2 of 3: Making a Pocket Protractor

  • Cut a sheet of paper into a square.
  • Fold the paper in half.
  • Fold the upper right corner into a triangle.
  • Fold the bottom right corner up to form a second triangle.
  • Fold the bottom left corner up.
  • Label the angles on your protractor.

Are protractors still used?

This kind of protractor are commonly used for mechanical and architectural drawing but today is more and more replaced with computer aided design or CAD. Toolmakers are also using this protractor. Very close tolerances are possible to measure with this tool.

How are Clinometers used?

A clinometer is a simple device used to measure angles. It can be used to measure the slope of a specific terrain, the height of a building or tree, or the declination of a celestial body.

What is a compass protractor?

A protractor can be used to measure angles as well as draw angles of a specific measure. A compass constructs circles and copies segments without measuring.

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