Close X. This page shows how to construct (draw) a 45 degree angle with compass and straightedge or ruler. It works by constructing an isosceles right triangle, which has interior angles of 45, 45 and 90 degrees. We use one of those 45 degree angles to get the result we need.

What is the name of 360 degrees angle?

The Full Circle. A Full Circle is 360° Half a circle is 180° (called a Straight Angle)

## What is the ratio of a 45 45 90 Triangle?

Hence, the angles respectively measure 45° (π4), 45° (π4), and 90° (π2). The sides in this triangle are in the ratio 1 : 1 : √2, which follows immediately from the Pythagorean theorem. Of all right triangles, the 45°–45°–90° degree triangle has the smallest ratio of the hypotenuse to the sum of the legs, namely √22.

## What is geometrical instruments?

Most instruments are used within the field of geometry, including the ruler, dividers, protractor, set square, compass, ellipsograph, T-square and opisometer.

## What is a template in CAD?

Drawing template files store default settings, styles, and additional data. When AutoCAD starts, the Start tab is displayed by default. A drawing template file is a drawing file that has been saved with a .dwt file extension, and it specifies the styles, settings, and layouts in a drawing, including title blocks.