The meaning of Erastus is Lovely and  Beloved. Its origin is Variant of the Greek name Erastos. Erastus is a form of Erastos and is generally pronounced like eh RAS tus. This name is mostly being used as a boys name. Last year it ranked 4,160th in the U.S. Social Security Administration list of most popular baby boy names.
Which undefined term is needed to define an angle? Plane Point Ray Line. Undefined, you need a line to define an angle (if you're looking for undefined terms). This is because, if you think about it, a ray is part of a line.
Designs are always drawn at 30 degrees in isometric projection. Orthographic: Orthographic dra wing is a way of drawing a three dimensional object. Normally the object is dr awn as three separate, related views-Front View, Side View and Plan View. A drawing that communicates the shape and size of an object through a series of related two-dimensional views. Perspective: A form of pictorial drawing in which vanishing points are used to provide the depth and distortion that is seen with the human eye.