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Mathematics 32 Online
Aureo:

Geometry problem. =/ ∆ABC ~ ∆DEF. If ∠A=75° and ∠F=90°, what is the measure of ∠B? Show all work

jhonyy9:

do you know how many is the sum of measure angles of a triangle ?

jhonyy9:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @jhonyy9 do you can drawing these two triangles ? \(\color{#0cbb34}{\text{End of Quote}}\)

Aureo:

The sum of the angles is 180 for Triangles

jhonyy9:

yes right drawing these triangles for easy understanding

jhonyy9:

then two triangles are similare what mean this ?

Aureo:

Oh wait, since ∆ABC ~ ∆DEF, that means that ∠C ~ ∠F, right?

jhonyy9:

yes sxactly

Aureo:

Okkay, so since I know ∠A and now ∠C, I can add those and subtract them from 180 to get ∠B, right?

jhonyy9:

yes perfect

Aureo:

So ∠B is 15 degrees, right?

jhonyy9:

yes sure

Aureo:

Thanks!

jhonyy9:

my pleasure and anytime good luck bye

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