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1º TECHNO UNIT 3 s1
Graphic expression and communication
Word | Definition |
---|---|
Ruler | Measuring tool with markings that show centimetres and millimetres |
Protractor | Measuring tool, usually a semicircle with markings to show degrees from 0º to 180º |
Set squares | Triangular drawing tools for drawing parallel and perpendicular lines |
Compass | Drawing tool with two connected arms, used to draw circles, arcs and to copy segments |
Lead | Part of a pencil that makes a mark |
Formats | Different sizes of papers |
Vertex | The point where the two lines of an angle meet |
Hypotenuse | The bigger side of a right triangle |
Isosceles | Triangle with two equal sides |
Scalene | Triangle with no equal sides |
Parallel lines | Lines with the same distance continuously between them |
Perpendicular lines | Lines at 90º to each other |
Concentric circumferences | Two circumferences that have the same center |
Secant circumferences | Two circumferences that have two points in common |
Scketch | A free hand drawing of the mental image that we have of an object, without measurements |
Diagram | A free hand drawing of the mental image that we have of an object, detailed and with measurements |