Pythagoras Theorem and Isosceles Triangles

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EasilyDistracted

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XYZ is an isosceles triangle with YT perpendicular to the base XZ.
If YT=12cm and the equal sides YZ and YX are both equal to 15cm.
(i) find the legnth of XZ (ii) the area of triangle XYZ

My question is where do i put the YT side? Also I dont understand the whole perpendicular thing?
any help is welcome please? (Also please don't comment on how stupid I am, I know that already :3)
 
EasilyDistracted said:
XYZ is an isosceles triangle with YT perpendicular to the base XZ.
If YT=12cm and the equal sides YZ and YX are both equal to 15cm.
(i) find the legnth of XZ (ii) the area of triangle XYZ

My question is where do i put the YT side? Also I dont understand the whole perpendicular thing?
any help is welcome please? (Also please don't comment on how stupid I am, I know that already :3)
Click to expand...

What about this perpendicular thing don't you understand?

Do you know the definition of perpendicular? If two lines are perpendicular to each other - what is the angle between those?
 
Subhotosh Khan said:
What about this perpendicular thing don't you understand?

Do you know the definition of perpendicular? If two lines are perpendicular to each other - what is the angle between those?
Click to expand...

Everything. =( No, I dont know the definition. It doesnt say the angle the whole paragraph like thing that i wrote before my own questions was all the teacher had given us, we had to make our own diagram with the details that had been given to us with the paragraph thing. =/
 
Denis said:
QUIT saying you're stupid; that won't work with us ;)

OK: start with this:
a right triangle has hypotenuse = 15 and a side = 12.
What's the length of the other side?

If you can't answer that, then you're not stupid,
but you either missed math classes or have a history teacher teaching math!

Now show some "spirit" and use google on "right triangle"...
Click to expand...

the length of the other side is 9cm :p
thanks for the laugh, cheered me up pretty fast :)
 
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