PLEASE HELP .A teacher wants to enlarge the fact triangle at the bottom as demonstration tool. If the length of each side of the triangle is 3.4 cm, what will the dimensions and angles of the triangle be after the teacher uses a 450% magnification on a copy machine?

Question

anonymous · Answer

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inkyvoyd · Answer

Well, do you think the angles with change?

anonymous · Answer

I'm not sure that I understand what it is asking for..

anonymous · Answer

I thought you would multiply the 450% * 3.4

inkyvoyd · Answer

450% magnification means that the image is 4.5 times bigger than vefore.

inkyvoyd · Answer

THat's correct. what about the angeles?

anonymous · Answer

oh ok.

anonymous · Answer

they will all be 15.3. I think

anonymous · Answer

You can demonstrate it by using rubber band with the pins observe the triangle before and after!

inkyvoyd · Answer

If the sides are all the same in a triangle, the angles are all the same.

anonymous · Answer

ohh that makes sense.. equilateral triangle

inkyvoyd · Answer

The sides are the same before and after...

inkyvoyd · Answer

Thus the angles are the same before and after.

anonymous · Answer

Keep in mind, no matter how large the triangle is, total degree is still 180!

anonymous · Answer

so I just say 3.4 for angles and sides?? but wouldn't it change if it was 4.5 times bigger.. or are you multiplying all of them by 4.5

anonymous · Answer

oh ok

anonymous · Answer

So I would just say 3.4 for sides and angles?

inkyvoyd · Answer

commence epic medal fight.

anonymous · Answer

@mathrocks83 It's essential that you memorize what both of us try to guide you!

anonymous · Answer

Ok. so since we do not know for sure if it is an equilateral triangle, would I still say it that the sides and angles are 3.4?

anonymous · Answer

"If the length of each side of the triangle is 3.4 cm"
It's equilateral triangle!

anonymous · Answer

Ok, but for the sides would you multiply 450 * 3.4 or 3.4*4.5?

inkyvoyd · Answer

3.4*4.5 Convert the percent.

anonymous · Answer

ohh ok thanks! so then 3.4 would stay the same for the angles b/c of equilateral triangle, correct?

inkyvoyd · Answer

No. THe other way around.

anonymous · Answer

Eek I'm confused. :S

inkyvoyd · Answer

Ok. THink. Smaller tirangle, bigger triangle. THe side lengths change, but the angles stay the same.

inkyvoyd · Answer

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anonymous · Answer

Because the sides are 3.4, and they change to be 15.3, do they want the angles to be 15.3 or 3.4?