There are infinitely many even on the plane and infintely more in space.
For Example:Take a square, draw the diagonals.
The meeting point of the dialgonals is the vertex where three polygons (in this case triangles) meet.
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The VERTEX of the angle is always in the middle... so if it is angle ABC, then you can also name it CBA as long as the vertex letter is in the middle, usually there are only 2 ways to name an angle.Also, if there aren't any other angles with the same vertex, you can just call angle ABC, angle B.Summary: If you have an angle:the vertex is labeled B, the others are A and C. what can you call the angle?Answer: ABC,CBA or B
The 3 ways in naming an angle are..... 1.3points method 2.vertex method 3.Number method
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The sum of a regular polygons exterior angles always = 360
There are 16 ways that four cars can be parked in a row of four parking spaces. You would multiply the number of cars by the number of spaces.