Right Triangle: 3-sided polygon containing 1 right angle.
Right Angle: 90˚
Pythagorean Theorem: IN ALL RIGHT TRIANGLES... a2 + b2 = c2
a2 + b2 = c2
32 + 42 = x2
9 + 16 = x2
25 = x2
x = 5
How does this work? Here's one way...
Since side a was 3, it squared is 9. b is 4, it squared is 16...you can see I put that with the unit pictures... if you rearrange the units of a and b and put them together, you get the picture for c.
Three numbers, such as 3, 4, and 5, are called Pythagorean triples because they can be integer sides of a right triangle.
Directions: Find the integer value for x.
Now we know a2 + b2 = c2, so to find b, we can rearrange it.
b2 = c2 - a2
x2 = 289 - 225
x2 = 64
x = 8
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