Lecture 2 : Euclidean geometry
... define incidence relations (wait till we do Hilbert’s axioms) leaving points and line undefined. 1.1.2. For example, in the definition of set, we don’t say what a set is, we just assume we already know what inclusion is and write down some axioms about the inclusion, using it to construct new sets. ...
... define incidence relations (wait till we do Hilbert’s axioms) leaving points and line undefined. 1.1.2. For example, in the definition of set, we don’t say what a set is, we just assume we already know what inclusion is and write down some axioms about the inclusion, using it to construct new sets. ...
Unit 5
... Standards: G.CO.7, G.CO.8, G.CO.10 In this unit students will be able to understand congruence in terms of rigid motions, prove geometric theorems, make geometric constructions, include CPCTC, midsegment theorems, triangle angle sum, triangle congruence theorems. UNIT GOAL: Students will understand ...
... Standards: G.CO.7, G.CO.8, G.CO.10 In this unit students will be able to understand congruence in terms of rigid motions, prove geometric theorems, make geometric constructions, include CPCTC, midsegment theorems, triangle angle sum, triangle congruence theorems. UNIT GOAL: Students will understand ...
Technical drawing
Technical drawing, also known as drafting or draughting, is the act and discipline of composing drawings that visually communicate how something functions or is to be constructed.Technical drawing is essential for communicating ideas in industry and engineering.To make the drawings easier to understand, people use familiar symbols, perspectives, units of measurement, notation systems, visual styles, and page layout. Together, such conventions constitute a visual language, and help to ensure that the drawing is unambiguous and relatively easy to understand. These drafting conventions are condensed into internationally accepted standards and specifications that transcend the barrier of language making technical drawings a universal means of communicating complex mechanical concepts.This need for precise communication in the preparation of a functional document distinguishes technical drawing from the expressive drawing of the visual arts. Artistic drawings are subjectively interpreted; their meanings are multiply determined. Technical drawings are understood to have one intended meaning.A drafter, draftsperson, or draughtsman is a person who makes a drawing (technical or expressive). A professional drafter who makes technical drawings is sometimes called a drafting technician. Professional drafting is a desirable and necessary function in the design and manufacture of complex mechanical components and machines. Professional draftspersons bridge the gap between engineers and manufacturers, and contribute experience and technical expertise to the design process.