Engineering Drawing/Graphics

Learn how orthographic projection converts three-dimensional objects into two-dimensional views, preserving true dimensions with parallel projection across front, top, and side views arranged around a reference line.

Learn the principles of orthographic projection, including space quadrants, first angle projection, and the three views drawn on vertical, horizontal, and profile planes.

Explore position, rotation, and lettering in orthographic projection across the four quadrants. Rotate top views 90 degrees clockwise and apply the lettering conventions for front, top, and side views.

Explore first and second quadrant projections in engineering drawing, using first angle projection with the x y reference line, front and top views on vertical and horizontal planes, in drawing.

Learn how to project points in the third and fourth quadrants using third-angle and fourth-angle projections, with the x y reference line and front and top views.

Learn to project lines in engineering drawing by analyzing four orientations relative to two planes, and construct front and top views with true length and a reference line.

Draw the projections of a line parallel to both hp and bp, showing its true length in the front and top views.

Learn to construct orthographic projections of a line parallel to one plane and inclined to another, using top view for true length and projecting to front and side views.

Produce the orthographic projection of a line parallel to the VP and inclined to the HP, using the XY line and front/top views with a 30-degree angle.

Learn to construct orthographic projections of a line inclined to both the horizontal and vertical planes, determining true length and apparent angles through front and top views.

Construct a line inclined to both planes with a profile plane, drawing front and top views using XY as reference. Apply 60° and 30° to establish apparent angles and projections.

learn the projection of planes by exploring plane orientation, plane notation, and the front, top, and the side views in orthographic projections, including true shape determination and a worked example.

Learn to construct orthographic projections of a hexagonal plate with its surface perpendicular to both principal planes, using side and front views to obtain true length.

Explain how to resolve a plane inclined to one plane and perpendicular to another, using a step-by-step method to obtain front and top views with a 45-degree inclination.

Learn the three-step method to project a plane inclined to both principal planes. Construct the top view of a pentagon and derive the front and reduced views at 45 degrees.

Explains auxiliary planes in engineering drawing, including principal planes, auxiliary incline and vertical planes, and the auxiliary plane method for solving inclined-plane problems with auxiliary top and front projections.

Explore projection of solids in simple positions with axis perpendicular to HP and BP, and learn top, front, and side views to reveal the true base shape.

Draw the projections of a hexagonal prism with its axis perpendicular to the VP. Create a hexagonal front view and a rectangular top view using the given dimensions.

Project a triangular prism with axis parallel to both hp and vp, obtaining the right side view as an equilateral triangle and the front and top views as a rectangle.

Follow a standard procedure to project solids with bases on hp or faces inclined to vp, using top and front views, exemplified by a 50 mm cube.

Project a hexagonal prism in two steps: draw the front hexagon and top rectangle, then tilt the top view 30 degrees to produce the inclined orthographic projection.

Project a pentagonal pyramid in three steps from front to top view, with a 25 mm base and 50 mm axis, including a 30-degree edge incline to the HP.

Draw isometric views of solids by preserving vertical lines and horizontal lines at 30 degrees to reveal true shapes in one step, with the axes inclined 120 degrees.

Explore how auxiliary views reveal the true shape and size of inclined surfaces in engineering drawing. Learn to set up auxiliary planes and project true dimensions from principal views.

Project auxiliary views to reveal the true shape of inclined surfaces. Practice with a square pyramid suspended from a corner at 45 degrees, using top, front, and auxiliary projections.

Discover how sectional views reveal interior configurations in engineering drawing by using a cutting plane to create full, half, offset, revolved, and broken sectional views, aiding interior geometry visualization.

Explore how sectional planes create true sectional views by slicing prisms, cones, pyramids, cylinders, and cubes at different positions; learn to draw top, front, and sectional views.

Explore how a sphere is cut by horizontal and vertical planes, and by 45-degree planes, to reveal true sectional shapes and construct true front and top views.

Explore development of solids by unfolding a 3D object into a 2D pattern that shows true surface areas and edges. Learn methods like alignment, triangulation, and approximate development.

Explore four solid-development methods—parallel line, radial line, triangulation, and approximation—along with true versus approximate development, and learn which solids suit each pattern, including prisms, cylinders, pyramids, cones, and spears.

Develop surface layouts for prisms, pyramids, cones, and cylinders using parallel line and radial line development, with triangulation and folding-line techniques for accurate unfolding and reconstruction.

Develop solids and their lateral surfaces using the paatelainen and radial line methods, solving section prisms, hexagonal prisms, and section cones with generators and base development.

Explore the intersection of solids, including curves of intersection and intersection lines, and how axis orientation perpendicular, inclined, or parallel, gives six cases.

Learn to obtain intersectional surfaces of solids using the line method and the cutting plane method, projecting lines on lateral surfaces and locating the intersection lines.

Explore the intersection of prisms and identify the straight line of intersection. Use top, front, and side projections to locate vertices where prism surfaces meet.