Are you answering a crossword for geometry? The answer is a straightedge.
This is a weird answer, but, maybe a lamp, a vase, a ball, a bowl, drinking glass, etc. I think you can think up more from that.
when you draw from a 3-D / real life object eg; a flower.
1) Some training is necessary before you can draw or read a drawing. 2) Sometimes it's easier to draw the object in perspective view (pictorial view), especially for clients who have difficulties interpreting orthographic drawings.
you can start of by getting isometric drawing paper
yes because you can draw it. my mom says that if you can draw it it is an object. An 'OBJECT' is defined as anything that is visible or tangible and stable in form so yes a tree is an object.
To draw an object at infinity for a concave mirror reflection, draw a parallel line to the principal axis passing through the focal point. This line represents the path of light rays coming from infinity. It's not necessary to physically draw an object at infinity, but understanding how the rays behave from afar helps in analyzing the image formation for concave mirrors.
sketch
draw lines
It entirely depends on the context. What is your context?
good question............
WHEN YOU DRAW SOME OBJECT TO SHOW WHAT YOUR TELLING
Sketch
[object Object]
Use a heart-shaped object and try to keep your pencil touching that object.
To draw a neutral object, focus on its basic shape and form. Use light shading and avoid extreme contrasts in values or colors. Consider the object's texture and details, but keep the overall presentation straightforward and balanced.
You cannot draw it since it is a three dimensional object. You can only draw a projection of a 3-d object in a 2-d plane.