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I will teach you how to find a missing side of a 45-45-90 right triangle. This concept allows you to fill in the rest of the missing sides of a special right triangle. The 45-45-90 right triangle should give at least one side length.
 * __Special Trangles 45-45-90__**

A 45-45-90 right triangle starts with at least one given side length. An angle of the triangle corresponds with the opposite side; in other words, the side directly across. If the side is 3 and corresponds with a 45 degree angle, then the other 45 degree angle should also correspond with a side equaling 3. To find the side corresponding to the 90 degree angle you take the side of the 45 degree correspondant and multiply it by the square root of 2. So in this problem the side that corresponds with the 90 degree angle would be 3 square root of 2. We found the side that corresponds with the other 45 degree angle and the side that corresponds with the 90 degree angle. When going opposite, to find a 45 degree corresponding side, you will have to divide the number by the square root of two.
 * __Instructions showing how to sole a 45-45-90 Triangle__**

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 * __Video showing how to solve a 45-45-90 Triangle__**




 * __Problem Solve__**

7. XY=7; XZ= 8. YZ=10; XZ= 9. XZ=; YZ= 10. XZ=10 ; XY= 11. YZ=; XZ=