vivianrush
Are the two triangles similar? If so, how do you know?
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vivianrush
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vivianrush
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i think its D. am I correct?
JUICEDECAFE
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D is correct. they aren't similar.
saifoo.khan
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I say no.
saifoo.khan
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@JUICEDECAFE How?
cwrw238
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they are similar
JUICEDECAFE
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If they are then explain because i don't see how
JUICEDECAFE
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did you look at the picture?
JUICEDECAFE
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?
cwrw238
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if triangles are similar then corresponding sides are in the same ratio
take the longest sides:
12 / 8 = 1.5
and the other pairs of sides
7.5 / 5 = 1.5
7.5 / 5 = 1.5
so they are similar
saifoo.khan
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^
JUICEDECAFE
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did you look at the picture?
vivianrush
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i'm so confused now.
cwrw238
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yes
cwrw238
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they are similar - though i must admit i'm a little confused with the reasons
JUICEDECAFE
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My opinion is D.
JUICEDECAFE
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and yours opinion is different
cwrw238
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similar triangles are the same shape but different size. also corresponding angles are equal
cwrw238
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i'm afraid your opinion is wrong, juice...
JUICEDECAFE
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My opinion is right. And i don't have time for arguing :) so Have a Wonderful Day!
cwrw238
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you too
vivianrush
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i have no idea if i'm right or wrong. i'm so lost now
saifoo.khan
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I still think it's still A.
cwrw238
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SSS?
saifoo.khan
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Yes. Am i wrong? Im not 100% sure.
cwrw238
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i've only seen SSS with respect to congruent triangles - but as we've shown that sides are in same ratio then SSS makes sense , i suppose
cwrw238
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i'm same as you - not completely sure
mathstudent55
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@vivianrush
@cwrw238 is correct
The correct answer is A.
This way of proving triangles similar is called SSS Similarity. If you show that the lengths of three sides of one triangle are proportional to the lengths of the sides of another triangle, then the triangles are similar.
This is one of three ways of proving triangles similar. The others are AA, and SAS Similarity.
AA is: if two angles of one triangle are congruent to two angles of another triangle, the triangles are similar.
SAS Similarity is: if the lengths of two sides of a triangle are proportional to the lengths of two sides of another triangle, and the included angle of one triangle is congruent to the included angle of the other triangle, then the triangles are similar.