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Assessment
What is the first postulate stated in Euclid's 'Elements' regarding a straight line?
A straight line can be drawn from any point to any point.
All right angles are equal to one another.
A circle can be drawn with any center and any radius.
If two lines intersect, they form two pairs of opposite angles.
Which of the following is one of the common notions established by Euclid?
Things which are equal to the same thing are also equal to one another.
The sum of angles in a triangle is always 180 degrees.
Two straight lines cannot enclose a space.
Parallel lines never meet, no matter how far extended.
What does Euclid's fifth postulate state about parallel lines?
Through a point not on a line, there is exactly one line parallel to the given line.
Two lines are parallel if they never intersect.
Any two lines must eventually intersect.
Parallel lines are always equidistant from each other.
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