TLE 8: Second Quarter

• Mensuration is the process of detailing measurement or an object or a structure.
• Metric System Mensuration and English System MEnsuration are the two types of mensuration.
• Metric Conversion: 1mm = 1/1000m, 1cm = 1/100m, 1dcm = 1/10, 1m = 100cm, 1km = 1,000m, = 100,000cm, = 1,000,000mm.
• Ratio and proportion are usually associated and applied to a special kind of drawing called scaled drawing.
• Geometric terms and figures are associated with every special form of whatever kind of structured design.
• Geometric Constructions are shapes fundamentally speaking of space and life.
• Understanding the relevance of geometric constructions and terms is crucial in design preparation and presentation.
• Center line is used to indicate the axis/center of hole or symmetrical object like circles and cylinders.
• Cutting plane line is used to show internal parts.
• Construction line is a very light and thin line that constructs layout work.
• Object lines are used to represent visible edges, also known as visible lines.
• Hidden lines are used to represent hidden or unseen edges of objects.
• A center line is used to indicate the axis/center of a hole or symmetrical object like circles and cylinders.
• Dimension lines are terminated by arrowheads to show the size of the part of the drawing.
• Extension lines show the starting and ending of dimension.
• Cutting plane lines are used to show internal parts.
• Leader lines indicate explanation or idea for an area.
• Short break lines are freehand and show an area is shortened.
• Long break lines are zigzag and show an object has been cut.
• Section lines show the cut surface of the section views.
• Phantom lines show alternate position.
• Construction lines are very light and thin and are used to construct layout work.
• Tri-dimensional forms often create a more glamorous effect and impact.
• Geometric Solids are one of the exceptionally line up as their effects are brilliant and incomparable.
• Regular Polyhedron is a 3d solid which consists of a collection of polygons that usually joins their edges.
• Tetrahedron is a convex polyhedron consisting of 4 triangular edges.
• A prism is a solid shape that is bound on all its sides by plane faces.
• The lateral faces of a prism are rectangles.