The number of permutations of 8 different things taken 4 at a time is given by:
Draw and label a line a line segment a ray and an angle
1 answer:
Answer and Step-by-step explanation:
Everything is in the picture.
Lines are forever, so they have an arrow at each end.
Line segments have a dot at each end, so they don't go on forever.
A ray has a dot on one end and an arrow on the other, so one side goes on forever.
An angle can be acute, right, or obtuse.
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