This post explains about step by step instruction for drawing the isometric projection of a triangular pyramid.
Let’s consider the isometric projection is to be drawn for a equilateral triangular pyramid of base side 40 mm and axis height 90 mm resting base parallel to VP and resting on HP.
1. Draw the triangle with the base of the solid 40 mm resting on HP and base edge perpendicular to V.P
2. Draw the centre lines and enclose it with a suitable rectangle.
3. Transfer the coordinates of a centre line to the sides of the enclosing rectangle.
4. Name the points as shown in the helping figure
5. Draw the principal axis OA and OB inclined at 30° to the horizontal base line
6. Copy the length of sides of helping figure's rectangle on the respective principal axis
7. Draw the vertical axis of length 90 mm in an upright position from the centre point.
8. Join the visible edges starting from the vertex to base corners by thick lines.
9. Complete the isometric projection with dimensioning and direction of viewing.
Let’s consider the isometric projection is to be drawn for a equilateral triangular pyramid of base side 40 mm and axis height 90 mm resting base parallel to VP and resting on HP.
1. Draw the triangle with the base of the solid 40 mm resting on HP and base edge perpendicular to V.P
2. Draw the centre lines and enclose it with a suitable rectangle.
3. Transfer the coordinates of a centre line to the sides of the enclosing rectangle.
4. Name the points as shown in the helping figure
5. Draw the principal axis OA and OB inclined at 30° to the horizontal base line
6. Copy the length of sides of helping figure's rectangle on the respective principal axis
7. Draw the vertical axis of length 90 mm in an upright position from the centre point.
8. Join the visible edges starting from the vertex to base corners by thick lines.
9. Complete the isometric projection with dimensioning and direction of viewing.
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