Pacific Arc Clear Acrylic Professional Triangle - 2045C-8" - 45/45/90 Degree - Plain Edge

welcome to friendly math 101 today's lesson is over special right triangles there are two types of special right triangles you have the 45-45-90 triangle you also have the 30-60-90 triangle today we're going to talk about the 45-45-90 triangle this triangle is special because it follows a certain pattern so first of all the way I know this is a 45-45-90 triangle is because I know if this is 90 this is 45 this has to be 45 because they all have to add to equal 180 so that would be the only situation where all angles add to 180 so when we have a 45-45-90 since we have equal angles we're also going to have equal sides so if this is 45 the opposite side is going to be equal to the opposite side of the other 45-degree angle so these two sides will be equal and I'm gonna call them X and this is going to be our pattern so both sides I'm going to call X the third side I'm going to call that sam