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Mathematics, 02.03.2020 23:14 mansnothot316
Which pair of angles are vertical angles?
ZWRU and ZSRT
ZWRS and ZVRT
ZVRU and ZTRS
ZVRT and ZSRT
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Answers: 3
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Mathematics, 20.06.2019 18:04
Here is their argument. given the obtuse angle x, we make a quadrilateral abcd with ∠dab = x, and ∠abc = 90◦, and ad = bc. say the perpendicular bisector to dc meets the perpendicular bisector to ab at p. then pa = pb and pc = pd. so the triangles pad and pbc have equal sides and are congruent. thus ∠pad = ∠pbc. but pab is isosceles, hence ∠pab = ∠pba. subtracting, gives x = ∠pad−∠pab = ∠pbc −∠pba = 90◦. this is a preposterous conclusion – just where is the mistake in the "proof" and why does the argument break down there?
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Mathematics, 21.06.2019 16:30
Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.
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You know the right answer?
Which pair of angles are vertical angles?
ZWRU and ZSRT
ZWRS and ZVRT
ZVRU and ZTR...
ZWRU and ZSRT
ZWRS and ZVRT
ZVRU and ZTR...
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