1. Avoid unnecessary sliding of T-square or triangles across the drawing

The answer is "True".

Explanation:

It is vertical or ambiguous districts are called a triangle. It typically comes in different sizes but is made of photographic film or plastic. Its triangles more widely shown are 45 grades and 30 grades were x 60. The following illustrations illustrate their correct use of T-square or triangle graph lines. The T-Place a designing tool, which is used to draw horizontal and vertical lines.

answerthe reference of the object;