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4 Geometric Terms and Construction Permission granted to reproduce for educational use only. Define terms related to the geometry of industrial drawings.

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Presentation on theme: "4 Geometric Terms and Construction Permission granted to reproduce for educational use only. Define terms related to the geometry of industrial drawings."— Presentation transcript:

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2 4 Geometric Terms and Construction

3 Permission granted to reproduce for educational use only. Define terms related to the geometry of industrial drawings. Describe orientation relationships found within two-dimensional and three-dimensional geometry List various properties of geometric constructions. Identify two-dimensional geometric shapes. Identify three-dimensional geometric objects. Identify specialized geometric elements that are used in product design.

4 Permission granted to reproduce for educational use only. Two-Dimensional Shape Terminology Related to circles: –Arc and circle –Center point –Radius and diameter –Chord –Sector –Quadrant –Semicircle

5 Permission granted to reproduce for educational use only. Two-Dimensional Shape Terminology

6 Permission granted to reproduce for educational use only. Two-Dimensional Shape Terminology Related to angles: –Right –Acute –Obtuse –Complementary –Supplementary

7 Permission granted to reproduce for educational use only. Two-Dimensional Shape Terminology Related to triangles: –Right –Equilateral –Isosceles –Scalene

8 Permission granted to reproduce for educational use only. Two-Dimensional Shape Terminology Related to quadrilaterals: –Square –Rectangle –Rhombus and rhomboid –Trapezoid and trapezium

9 Permission granted to reproduce for educational use only. Two-Dimensional Shape Terminology Related to polygons –Pentagon –Hexagon –Heptagon –Octagon Inscribed versus circumscribed

10 Permission granted to reproduce for educational use only. Three-Dimensional Form Terminology Terms –Primitives –Right versus oblique Basic 3D Primitives –Cube –Prism –Cylinder –Sphere –Cone

11 Permission granted to reproduce for educational use only. Orientation Terminology Parallel Perpendicular

12 Permission granted to reproduce for educational use only. Orientation Terminology Concentric Eccentric Coaxial

13 Permission granted to reproduce for educational use only. Orientation Terminology Tangent Point of tangency

14 Permission granted to reproduce for educational use only. Specialized Geometric Shapes Conic section terms: –Hyperbola –Parabola –Ellipse

15 Permission granted to reproduce for educational use only. Specialized Geometric Shapes Specialized terms: –Involute –Helix –Spline

16 Permission granted to reproduce for educational use only.

17 What does it mean to say that a polygon is circumscribed about a circle? The sides of the polygon are tangent to the circle (the circle fits within the polygon).

18 Permission granted to reproduce for educational use only. What is the three-dimensional equivalent (or extension) of the concentric orientation? Coaxial

19 Permission granted to reproduce for educational use only. List four conical sections Circle, ellipse, hyperbola, and parabola

20 Permission granted to reproduce for educational use only. Which of the following is not a 2D shape: cone, circle, pentagon, trapezoid? Cone

21 Permission granted to reproduce for educational use only. Which of the following is a 3D form: octagon, rhomboid, torus, scalene? Torus

22 Permission granted to reproduce for educational use only. What type of geometric construction is represented by screw threads? Helix


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