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(2) Volume = (2)(2)(5) = 20 cubic units, Surface area = 2(2)(5)+2(2)(2)+2(2)(5)=20+8+20=48 square units.

The space diagonals all have the same lengths.





(3) Point G (6, 4, 5)
distance to the x axis: take the y and z coordinates and do the pythagorean theory

distance to the y axis: take the x and z coordinates and do the pythagorean theory

distance to the z axis: take the x and y coordinates and do the pythagorean theory




(4) There is no point P.

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(5)
review problem 5
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(6)



(7)



(8)2010-12-09_0001.jpg



(9) and (10).

My work below shows how I found Angle F in triangle FHC using our new dot product formula. You should follow the same idea to find the rest of the angles in this triangle, as well as for problem 10.

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The New Area Formula (SAS)

I am using my work from #9 to find the area.

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The Triangle Angle Sum Theorem.

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The Exterior Angle Theorem

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