## Monday, January 23, 2012

### Joanna's Scribe post (Pythagorean Relationship)

The variable A and B stands for the legs in a right triangle.
C, on the other hand stands for the hypotenuse, which is the longest line in a triangle.

The Pythagorean Relationship is formula that we use to find a side length in a given triangle.
It means that when you add the area of leg A and the area of leg B, the sum would be the area of the hypotenuse,C.

2. Solve for the missing side length.

3. Is this a right triangle? Prove it!!!

No, it's not a right triangle because
the formula(Pythagorean relationship)
says that a² + b² = c²  but
when you sum up the leg A and B(8² + 6²)
the answer is 100cm² and not 121cm² which
is the area of the given measurement(11 cm)  in hypotenuse.

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Pages 98-100

17) Carmel wants to mount an 18 cm x 18 cm square picture on a square board that is four times the area of the picture.

a)

b)

c)

5. Estimate each value to one decimal place. Check your answer with a calculator.

a)

b)

c)

10) Kai uses an entire can of paint on a square backdrop for the school play. The label on the can states that one can cover 27 cm² of the wall surface. Estimate the backdrop's side lenth to one decimal place.