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whats an orthocenter of a triangle?

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It's the point at which the three altitudes of a triangle intersect. Altitudes are lines which intersect with both the vertex of a triangle and the middle of the side of the triangle opposite to that vertex, as shown in this diagram:|dw:1331594454196:dw|
So, the orthocenter would appear as so in an equilateral triangle:|dw:1331594531392:dw|
not quite sure i agree with the definition of altitude you provided... The altitude is a line drawn from one vertex of the triangle to the line containing the opposite side that is perpendicular to the line i.e. |dw:1331594718807:dw|.

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Other answers:

That's pretty much exactly what I said, XD.
Oh, nope, you're right. My bad.
thank you whats an isosceles triangle look like? and this is the question being asked: if
an isosceles triangle is a triangle with two sides exactly the same length like: |dw:1331595007721:dw| the question referring to an isosceles triangle?
thank you that helped alot :)
well, if we're talking about an isosceles triangle, and we have one 94 degree angle, can we have another 94 degree angle? (Triangle interior angle sum th. may help here)
which of the following could not be the dimensions of a triangle? A. 1.9,3.2,4 C. 3,7.2,7.5 B.1.6,3,4.6 D. 2.6,.5,6
Have you heard of the triangle inequality theorem?
yeah but i dont remember what it is exsactly
it basically says, if we add together two sides, it should always be greater than the remaining side so, for your problem, we'd use it three times for each problem. We want to go through all possible combinations of sums. mathematically, we'll denote it (for three sides a, b, and c) as a + b > c, b + c > a, and a + c > b Ex) Your first part, 1.9,3.2,4 1.9 + 3.2 > 2.4, 3.2 + 4 > 1.9, and 1.9 + 4 > 3.2 These all must come out as true statements. 5.1 > 2.4 (true), 7.2 > 1.9 (true), and 5.9 > 3.2 (true!) So, this set of lengths will work for a triangle.
hmm, that should not be 2.4, that should be 4. Sorry! It would still be true for 4, tho.
okay thank you
so b could not be a triangle be1.6 + 3 is equal to 4.6 not >?
nope. if they're equal... then you will have this |dw:1331596667012:dw|
thank you :) you have been a great help
No problem! I am glad to help! :)
what does it mean when it says: What is the correct relationship between the angle measures of triangle PQR? answer choices are : F. m
This deals with a property of triangles that says that the largest side is across from the largest angle, and similarly the smallest side is opposite the smallest angle. If you made a diagram (not to scale)... |dw:1331599617470:dw|
thank you I was miss reading the answers I had thought it was J but now I see it is F
yep, F would be correct. :)
thanks whats an integer
An integer is a number in the set of all whole numbers and their opposites... Like, -1, -6, 1, 5, and 0 are all integers. Integers do NOT include decimals, radicals that cannot simplify, and fractions that do not simplify.
what about seven?
Yep, 7 is an integer. The counting numbers (1, 2, 3, 4, and so on), 0, and the negatives of those counting numbers (-1, -2, -3, -4, and so on) would be all integers
suppose two lines intersect in a plane to form four angles. What do you know about the pairs of adjacent angles formed? Exsplain. I know that 1=3 and 4=2 and in the picture given 1>4 and 3>2 but I dont know how to exsplain that......
I don't have the picture, but I imagine you got 1=3 and 2=4 from vertical angles... we're looking at adjacent angles, the angles next to each other...
yeah 1 is obtuse and so is 3
i just dont know how to explain it
i think, rather than observing the angles themselves, you should look at each of these pairs of angles as whole units: |dw:1331601403645:dw| Specifically, the sum of the adjacent angles
so that they equal 180?
Yeah. The adjacent angles at the intersection of two lines add up to 180. The proper math term for this is that these angles are "supplementary"
okay now i have came across a confusing one I am particually bad at story problems. Here it goes: Eric and Heather are each taking a group pf campers hiking in the woods. Eric's group leaves camp and goes 2 miles east, then turns 20 degrees south of east and goes 4 miles. Heather's group leaves camp and travels 2 miles west, then turns 30 degrees north of west and goes 4 miles. How many degrees south of east would Eric have needed to turn in order for his group and Heather's group to be the same distance from camp after the two legs of the hike?
i personally feel it should have been 30 degrees, but i feel like i may be misreading the question
I think it has something to deal with sin cos or tan but i dont remember how to do those.
your actually right
I guess a valid reasoning would be something more like... |dw:1331608341053:dw|
Man, props to AccessDenied for shelling out answers like a machine. Nice job on helping him, I wish I could give you a medal for every single individual question you answered.
i know AccessDenied helpped me alot but I am a girl....
I was helping a friend I have not had a math class for an entire year so I am a bit rusty and its geometry on top of that
I'm using "him" as a generic term for addressing anyone. Apologies for not knowing your gender, though i'm not sure what you would expect me to know it based on.
oh I am not offended judt thought I would let you know for future refernce you helped me earlier as well so thank you
im always glad to help! :D now i just gotta go do my own homework, haha.
thats what I am now working on lol
let me know if i can help you because you have helped me so much I would like to return the favor
well, its pretty easy stuff im working on.. just some biology and finishing one problem on geometry

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