What do you mean? You can always draw a line from Earth to Venus. Or between any two points.
the equator is the imaginary line around the earth.
There are 'spots' of zero latitude all around the Earth. If you draw enough of them on a map or globe, they blend together and seem to form a solid line, called the "equator".
Try Google Earth and draw a line.
The horizontal line that goes around the "waist" of the Earth is the Equator. The vertical line that goes vertically around the Earth, through the poles, is the Prime Meridian.
The horizontal line that goes around the "waist" of the Earth is the Equator. The vertical line that goes vertically around the Earth, through the poles, is the Prime Meridian.
The imaginary line between the poles of the Earth around which the Earth spins is called the "axis of rotation".
The equator is an imaginary line which indicates where the middle of the earth is and it goes around.
You get something to draw with and something to draw on and DRAW
The hard part is form a right angle. To do that draw a line with two points on it. Draw a circle around each point. Draw a line through the two points at which the circles intersect.
It's hard to show without using a diagram (and I can't post one sorry), but the answer is No. Try this. Draw two circles of different sizes for the Sun and Earth (the smaller one). Draw a line from the top of the Sun to the top of the Earth and extend it beyond the Earth. Now draw a line form the bottom of the Sun to the bottom of the Earth and extend it. Those two lines will intersect and form a triangle (with a rounded base of the Earth). This is the Umbra. Now draw a line form the top of the Sun to the bottom of the earth and extend it. Draw another line form the bottom of the Sun to the top of the Earth and extend it. This will form an open-ended shape. This is the umbra. As Hilmar said above, the umbra and penumbra form because the Sun is not a point source.
axis