1. ## Similar triangles

If I have two right angle triangles and two unknown side lengths which I have not yet as apart of the question been asked to calculate or find, but have been asked to show that the two triangles are similar, would somebody please advise what the question means by SHOW.

Thanks

David

2. ## Re: Similar triangles

Originally Posted by David Green
If I have two right angle triangles and two unknown side lengths which I have not yet as apart of the question been asked to calculate or find, but have been asked to show that the two triangles are similar, would somebody please advise what the question means by SHOW.

Thanks

David
Well, how do you know when two triangles are similar?

3. ## Re: Similar triangles

Originally Posted by Prove It
Well, how do you know when two triangles are similar?
They look similar in appearance, so I am suppose to draw them then?

4. ## Re: Similar triangles

Originally Posted by David Green
They look similar in appearance, so I am suppose to draw them then?
Absolutely not. There are certain properties about the two triangles which will make them similar. I'm sure if you have been given homework on similar triangles you would have gone over this in class, so check your class notes.

5. ## Re: Similar triangles

Hi David Green,
Show that an acute angle of the first triangle is equal to one in the second triangle

6. ## Re: Similar triangles

Originally Posted by Prove It
Absolutely not. There are certain properties about the two triangles which will make them similar. I'm sure if you have been given homework on similar triangles you would have gone over this in class, so check your class notes.
I have not been given home work on it. Reading the course book does give advise about similar triangles, it explains about the angles being equal which I understand, and it talks about the sides being in proportion to each other, which I understand, then it goes on to show some algebra to proves the lenghts of the sides are in proportion, which I also understand, what I did'nt understand was the explanation of show?

Show by drawing it, show by mathematically working out, show by explanation?

Sometimes questions are not very well worded, which is why I asked for professional second opinions?

Thanks

David

7. ## Re: Similar triangles

Originally Posted by bjhopper
Hi David Green,
Show that an acute angle of the first triangle is equal to one in the second triangle