Describe your approach to solving a given triangle. include specific details about what you look for and how you start the

problem. what are the important pieces of information that affect how you solve the triangle?

During solving a triangle, I analyse first all the given data and variables, because this help to understand the logical procedure I should take. Then, I read several time the question of the problem, this gives me the clue about what theorems I should use.

After selecting the proper theorems to solve the triangle, I look for details that match with theorems, in order to organise a logical sequence.

With this approach, I tend to get all the needed information to demonstrate or solve the triangle, justifying every step with theorems.

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

i belive those are the ones that are under 90 degreese.