# Math Help - Geometrical meaning of √2

1. ## Geometrical meaning of √2

See the drawing at the attached file, the sides of the triangle are 1,1,2

Ιwant a geometric relation for 2, i.e. something like that:
a/1=b/a=>b=a^2
and thus
2=1+a+b+c+...=1+a+a^2+a^4+a^8+a^16+...
But a/1=b/ais probably wrong. Can you proove it if it’s correct?
Any other similar relation I could get?

2. A right triangle is one in which ( leg1)^2 + (leg 2)^2 = (hypothenuse)^2
Any equal legged right rt triangle has a hypothenuse= to leg* rad2

bjh

3. a=?

4. If x is the length of the leg of an isosceles right triangle, then (x)(√2) is the length of its hypotenuse ... we can prove it using pythagorean theroem .

5. a=?

6. Originally Posted by ThodorisK
a=?
$a = 1 - \dfrac{1}{\sqrt{2}}$

7. ## geometric meaning of rad2

Hello Thodorisk,
I read your largest triangle as a right triangle with sides 1 and 1 and hyoothenuse =rad 2

1^2 + 1^2 =rad2^2 proving that it is a right triangle If the two legs of a right triangle are equal then the hypothenuse = leg times rad2 Call a leg a then the hypot is atimes rad2

bjh

9. It's not clear exactly what you are trying to do. I can see that you have a right triangle with legs of length 1 and so hypotenuse of length $\sqrt{2}$. Then, I think, you have marked of a length of 1 on the hypotenuse and drawn a line from the right angle to that point. But how is the second line, separting the segments marked "a" and "b" determined. Is it parallel to the first line from the right angle?