yes
rightangle
The letter K. It has two acute angles, top and bottom between, the l and < and the inside angle of the < is a rightangle.
hypotenuse
None
by using rightangle triangle
There is no particular name.
The angles of any triangle add up to 180 degrees.
a piece of lab equipment made of glass that is used to manipulate liquid because of its shape.
The 3 interior angles of any triangle add up to 180 degrees.
Four Turns
360 degrees