Isosceles Right Triangles

Isosceles Right Triangle (45-45-90)

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Multiple Choice

Find the value of a and b

• $$a=2\sqrt{2\ },\ b=\ 4$$

• $$a=2\ ,\ b=2$$

• $$a=4\ ,\ b=2\sqrt{2}$$

• $$a=4\ ,\ b=2$$

Multiple Choice

Find x and y

• $$x=4\sqrt{2},\ y=4\sqrt{2}$$

• $$x=4\ ,\ y=4$$

• $$x=4\ ,\ y=4\sqrt{2}$$

• $$x=4\sqrt{2},\ y=4$$

Multiple Choice

$$Simplify\ :\ \frac{6}{\sqrt{2}}\$$  

• $$it\ is\ already\ simplified$$  

• $$it\ should\ be\ \sqrt{3}$$  

• $$\ it\ should\ be\ \frac{6\sqrt{2}}{2}=3\sqrt{2}$$  

• $$it\ should\ be\ 3$$  

Multiple Choice

If you want to find the leg of an isosceles right triangle, just ____ the hypotenuse by _____ , then simplify.

• $$multiply,\ \sqrt{2}$$

• $$multiply\ ,\ 2$$

• $$divide\ ,\ \sqrt{2}$$

• $$divide\ ,\ 2$$

Multiple Choice

Find the measure of a leg of an isosceles right triangle (45-45-90) if the hypotenuse has a measure of 10 ft.

• $$5\ ft$$

• $$5\sqrt{2}\ \ ft$$

• $$10\ ft$$

• $$\frac{5\sqrt{2}}{2}\ ft$$

Poll

How well do you understand 45-45-90 rule?

• I understand it very well

• I get it pretty well , need a little extra practice

• I am a little shakey on this , definitely need more practice

• I am totally lost , no clue on what is going on with this lesson HELP