Question

The lengths of two sides of an isosceles triangles are given. What is the perimeter?

10 cm, 12 cm

Please help! I don't understand how to solve this problem.

Answer 1

I think that the perimeter would be 44

Answer 2

How did you get that?

Answer 3

Go to this: (they're just examples)
http://www.algebra.com/algebra/homework/word/geometry/How-to-solve-problems-on-the-isosceles-triangle-sides-measures-Examples.lesson

Answer 4

Medal?

Answer 5

nevermind, i did it wrong

Answer 6

And go to this:
http://www.calculatorsoup.com/calculators/geometry-plane/triangles-isosceles.php

Answer 7

you have to use the pythagoream theorem

Answer 8

Thanks!

Answer 9

For sure? 31356 is yours the pythagorean theorem?

Answer 10

im sure, let me show you

Answer 11

Try looking it up

Answer 12

you have to find the hypotenuse

Answer 13

then do hypotenuse+hypotenuse+base

Answer 14

I did. But it really annoys me how it doesn't say which of the measurements is for the base or on the lateral side.

Answer 15

do you have a pic of the triangle?

Answer 16

Nope.

Answer 17

ohh but did you draw it or something?

Answer 18

no : (

Answer 19

I'm just trying to figure out the perimeter.

Answer 20

im sorry i was cooking ummm let me see how can i help you, you have to find the base because it says that two sieds are 10 and 12 so use the pythagoream theorem to find the base

Answer 21

but for an isosceles triangle,i don't think you use the pythagoream theorem.

Answer 22

do u?

Answer 23

you can use the pythagoream theorem to find any missing side of a triangle

Answer 24

so in order to find the perimeter of the triangle you have to find the base so do the a^2 +b^2 = c^2 thing and tell me what you get