Determine whether each statement is true or false in ℝ 3 . (a) Two lines parallel to a third line are parallel. (b) Two lines perpendicular to a third line are parallel. (c) Two planes parallel to a third plane are parallel. (d) Two planes perpendicular to a third plane are parallel. (e) Two lines parallel to a plane are parallel. (f) Two lines perpendicular to a plane are parallel. (g) Two planes parallel to a line are parallel. (h) Two planes perpendicular to a line are parallel. (i) Two planes either intersect or are parallel. (j) Two lines either intersect or are parallel. (k) A plane and a line either intersect or are parallel.
Determine whether each statement is true or false in ℝ 3 . (a) Two lines parallel to a third line are parallel. (b) Two lines perpendicular to a third line are parallel. (c) Two planes parallel to a third plane are parallel. (d) Two planes perpendicular to a third plane are parallel. (e) Two lines parallel to a plane are parallel. (f) Two lines perpendicular to a plane are parallel. (g) Two planes parallel to a line are parallel. (h) Two planes perpendicular to a line are parallel. (i) Two planes either intersect or are parallel. (j) Two lines either intersect or are parallel. (k) A plane and a line either intersect or are parallel.
Solution Summary: The author explains that the vectors are parallel if their direction vector is scalar multiple of other.
∠EFG
and
∠GFH
are a linear pair,
m∠EFG=4n+15,
and
m∠GFH=3n+39.
What are
m∠EFG
and
m∠GFH?
Suppose that A =
and B =
for some real numbers x and y. Find
9 у
all ordered pairs (x, y) such that AB = BA.
(Enter your answer as a list of ordered pairs; for example, (1,2), (3,4), (5,6) .)
Answer: (0,3),(0,-3),(0,9),(1,0)
If A = {1, 2, 3, 7} and B = {2, 4, 5, 7}, then the intersection of A and B is?
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