I think its GI. Could be HJ too. Here's a little reminder about intersecting, parallel, and perpendicular lines...
An operation that is done to a value and it stays the same, it is called the "identity property".
Some quick examples:
Adding any number with zero will result in the same number.
Multiplying any number with one will result in the same number.
Hope this helps!
Answer:
Step-by-step explanation:
So here we have a 45-45-90 triangle.
This a special right triangle were the sides across from the 45 degree angles can be considered x, while the hypotenuse is two square roots of x.
Here since we have the sides across from the 45 degree angle we can conclude that 
So if we wanted the hypotenuse we would just plug in this value of x like so:




Therefore the hypotenuse is 18.
Answer:
√3
Step-by-step explanation:
The given expression to be simplified is

but


Since √12=2√3,this implies that,

Therefore,



The simplified form of ,
is √3