DanielWhoseley
in triangle ABC, m<A=60 and m<B=40. which side of triangle ABC IS THE longest?
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lesliemolina
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m<a
DanielWhoseley
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yes
calculusxy
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To find this answer out you want to find the opposite side of the longest angle. That's the "formula".
DanielWhoseley
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ok
calculusxy
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Now do you understand on how to figure this out?
lesliemolina
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its just m<A=60 trust me im in college i learned this in 9th grade im a reslly smar6 student
DanielWhoseley
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ok
ranga
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Find the third angle first. Whichever angle is the biggest the side opposite to that will be the longest.
ranga
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m<A=60 and m<B=40.
Therefore m<C = 180 - 60 - 40 = 80
m<C is the biggest angle. Therefore, the side opposite m<C will be the longest.
The side opposite m<C is usually denoted by c.
So c is the longest side of the triangle.
DanielWhoseley
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angle A and C is the longest side
ranga
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Angle C = 80 > Angle A = 60 > Angle B = 40
Therefore, side c > side a > side b
DanielWhoseley
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ok thank
ranga
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you are welcome.
DanielWhoseley
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two sides of an isosceles triangle measure 3 and 7. which of the following could be the measure of the third side?
nikato
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so u know an isoscels trianlge must ahve 2 sides that are congrunet. since u have a side that is 3 and another 7. the 3rd side must be either 3 or7
DanielWhoseley
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yea
nikato
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yea, thats it
DanielWhoseley
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the answer is [1] 9 [2] 7 [3] 5 [4] 3
nikato
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well, it could be either 2 or 4 with all the info u were given
DanielWhoseley
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ok thanks
DanielWhoseley
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in triangle ABC, m<=48, and m<c=24. what type of triangle is triangle ABC?
nikato
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|dw:1388369988615:dw|can u find <B if the total of a triangle is 180
DanielWhoseley
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ADD 48 AND 24
AND IT GIVE YOU 72
DanielWhoseley
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IS IT RIGHT
nikato
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yes, then subtract that from 180. then tell me if that is obtuse or actue
DanielWhoseley
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obtuse
nikato
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correct, taht measn triangle ABC is obtuse
DanielWhoseley
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in the accompanying diagram, BA=BC and m\[\forall <x =117\]
nikato
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waht diagram
DanielWhoseley
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|dw:1388374843523:dw|
nikato
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|dw:1388375062951:dw|so this is what you have. what are u solving for?
DanielWhoseley
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for Y
nikato
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|dw:1388375208766:dw|can u solve for that angle if a line=180
DanielWhoseley
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180-117=63
nikato
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|dw:1388375443532:dw| y=63 becuz the base angles of an isoscles trinagle are congruent and by vertical angle thoerem thsoe 2 angles are also congruent
DanielWhoseley
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thank you
nikato
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your welcome
DanielWhoseley
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in triangle ABC, <A is obtuse. which statement is true about the sum of the measure of < B and <C
nikato
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they must be less than 90
DanielWhoseley
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thanks
DanielWhoseley
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given: AB=DE and < A=<D. which of the following methods can be used to prove that angle ABC=DEC?|dw:1388376416947:dw|
nikato
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|dw:1388376739438:dw|so this is whats given. and can u show me ur choices
DanielWhoseley
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[1] SAS [2] ASA [3] SSS [4] there is insufficient information to Determine if the triangles are congruent
nikato
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if this is allt eh info even, then i think is 4
DanielWhoseley
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at a certain time of the day the shadow of a 5' boy is 8' long. the shadow of a nearby flagpole at this same time is 28 long. how tall is the flagpole?
nikato
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set up a propertion and solve
nikato
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|dw:1388377765971:dw|
DanielWhoseley
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I got 17.5
nikato
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ok, then that should be the height of the actual flagpole
DanielWhoseley
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thank
DanielWhoseley
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Given: AD is congruent to CD, AB=CB
prove: angle ABD=angle CBD|dw:1389560316762:dw|
nikato
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Use SSS becuz BD=BD by reflexive