Recent content by albertoid

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    Undergrad Geometry Area Proof (quadrilateral)

    but this quadrilateral is inscribed in a circle. I seem to have constructed a counterexample of a quadrilateral (inscribed in a circle) that does not have adjacent sides congruent. However I did realize that m<ADC is 1/2 m<AOC (Thales: subtended by chord AC). I'm not sure it can be used for...
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    Undergrad Geometry Area Proof (quadrilateral)

    Thanks, HallsofIvy :) I had another question. ABCD is a quadrilateral with perpendicular diagonals, and is inscribed in a circle with center at the point O. Prove that [ABCO] = [AOCD]. I have drawn a cyclic quadrilateral with the vertices AC and BD intersecting at 90 degrees. (Vertices...
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    Undergrad Geometry Area Proof (quadrilateral)

    I'm having trouble with this one: "Given a convex quadrilateral ABCD, construct a point E on the extension of BC such that the area (ABCD) = (ABE)" The quadrilateral I drew has A, B, C, D labelled counter-clockwise, and an extension drawn from A to E, where E is BC extended and F is the...
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    Translational/Angular Acceleartion

    but isn't angular acceleration the acceleration of a rotating body? Whereas centripetal force is the force directed towards the center of the "circle", which would cause a linear acceleration... right? This question was asked in the context of the unit we are doing in regards to torque and...
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    Translational/Angular Acceleartion

    gravity. but is the Earth undergoing angular acceleration? i feel since each year is ~365 days it seems to travel at constant velocity.
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    Translational/Angular Acceleartion

    1. "If you apply a single force to an object floating in space, you can impart... a) only translational acceleration b) only angular acceleration c) it is possible to impart both d) no acceleration will result since there is no gravity I think the answer is either a) or c). I'm...