The length of one leg of the triangle is 7 units. In a 45−45−90 triangle the two shorter sides are equal since it is also an isosceles triangle.
What is triangle?
A triangle is a three-dimensional shape with three sides, three angles, and three vertices. A triangle is another name for a polygon.
Using Pythagoras' theorem as
![x^{2} +x^{2}=7^{2}](https://tex.z-dn.net/?f=x%5E%7B2%7D%20%2Bx%5E%7B2%7D%3D7%5E%7B2%7D)
![x^{2}=49](https://tex.z-dn.net/?f=x%5E%7B2%7D%3D49)
x=√49/2
x=7√2
As a result, 7 unit is correct option.
Learn more about on triangle,here:
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Answer:
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