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Mathematics, 31.07.2019 12:00, somedudeontheIn
The legs of an isosceles triangle have lengths 2x + 4 and x + 8. the base has the length 5x - 2. what is the length of the base?
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Mathematics, 20.06.2019 18:04, Uc34758
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 16:00, orlando19882000
You are cycling around europe with friends. a cycling festival is starting soon in barcelona. it will take 4.5 hours to cycle there. how many minutes in total is this?
Answers: 1
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The legs of an isosceles triangle have lengths 2x + 4 and x + 8. the base has the length 5x - 2. wha...
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