Given:
Quadrilateral PQRS
P(o, o), Q(a+c, o), R(2a+c, b), S(a, b)
Find:
whether the diagonals are perpendicular using coordinate geometry
Solution:
If the diagonals are perpendicular, their slopes multiply to give -1.
The slope of PR is
(b-o)/(2a+c-o)
The slope of QS is
(b-o)/(a-(a+c)) = (b-o)/(-c)
The product of these slopes is
(b-o)·(b-o)/((2a+c-o)(-c))
This value will not be -1 except for very specific values of a, b, c, and o.
It cannot be concluded that the diagonals of PQRS are perpendicular based on the given coordinates.
It needs to rotate about it's center 1/12th of a full circle (i.e 1/12th of 360 degrees)
360/12 = 30
<u><em> . . . angle = 30 degree rotation</em></u>
Answer:
the first answer is 166
Step-by-step explanation:
Answer:
lol
Step-by-step explanation:
Answer:
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Step-by-step explanation:
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