How do you draw a missing view?

Transfer heights from the front view horizontally and depths from the top view via a 45° mitre line into the side view (or vice versa), then decide for every edge whether it is visible or hidden.

Where is the top view in first-angle projection?

Below the front view. The view from the left is placed to the right of the front view.

When are hidden edges drawn?

When they are needed for an unambiguous reading, as thin dashed lines (line type 02.1). In this app they are part of the solution.

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Draw the missing view

About this app

Two views are given, you draw the third: 15 parts from an angle bracket to a shaft with a flat, first-angle projection, line types to ISO 128. Checking is exact without AI and reports missing, superfluous and wrongly drawn edges; once solved, the drawing folds into place in a 3D glass box.

With explain mode: an AI tutor walks you through the app, points out what matters in the scene and answers your questions.

The classic exercise

Complete the top view from the front and side view, or the other way round: this task is part of almost every technical drawing exam. It trains spatial thinking and the rules of orthographic projection to ISO 5456-2. Every edge has to sit in the right place in all views, hidden edges are dashed, axes of holes and cylinders are chain lines.

What the app shows

15 parts of increasing difficulty, from an angle bracket via slot, dovetail and bearing block to a shaft with a flat. You draw on a grid sheet with line, circle and eraser and pick the line type as on a drawing board. Projection lines from the given views and the 45° mitre line help you transfer dimensions.

Exact checking

Checking works without AI: your lines are compared with the target view computed from the part geometry, and the app reports missing edges, superfluous edges and wrong line types with the relevant standard. Once solved, the drawing folds into place in a 3D glass box.

Frequently asked questions

How do you draw a missing view?: Transfer heights from the front view horizontally and depths from the top view via a 45° mitre line into the side view (or vice versa), then decide for every edge whether it is visible or hidden.
Where is the top view in first-angle projection?: Below the front view. The view from the left is placed to the right of the front view.
When are hidden edges drawn?: When they are needed for an unambiguous reading, as thin dashed lines (line type 02.1). In this app they are part of the solution.

Subject: Technical drawing

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