## Tuesday, November 16, 2010

### Homework Book: Odd Questions

1) The _______ relationship can be used to determine the _______ of the _________
of a right triangle when the lengths of the two_______ are known.

pythagorean, lengths, hypotenuse, legs

3)Determine the length of each hypote
A)

a²+b²=c²
9cm²+40cm²=c²
9x9+40x40=c²

81cm²+1600cm²=c²
1681cm²=c²
√1681cm²=√c²
41cm=c

B)

a²+b²=c²
12m²+35m²=c²
12x12+35x35=c²
144m²+1225m=c²
1369m²=c²
√1369m²=√c²
37m=c

5)Calculate the missing side length for each right triangle, to the nearest tenth of a centimetre. Show your work.
A)

c²-a²=b²
6cm²-5cm²=b²
6x6+5x5=b²
36cm²+25cm²=b²
11cm²=b²
√11cm²=√b²
3.3cm=b

B)

c²-b²=a²
12cm²-7cm²=a²
12x12+7x7=a²
144cm²+49cm²=a²
95cm²=a²
√95cm²=√a²

9.7cm=a

7)A triangle is made up of two smaller congruent right triangles.

A)Find the length of the hypotenuse for the right triangles, to the nearest tenth of a metre. Show your work.
a/2=a²
8/2=4

a²+b²=c²
4²+2²=c²
4x4+2x2=c²
16m²+4m²=c²
20m²=c²
√20m²=√c²
4.5m=c

B)Calculate the perimeter of the large triangle, to the nearest tenth of a metre. Show your work.
a+b=perimeter
8+4.5=17 m

1. Nice post Paul. Good use of color and it looks very neat. I also liked the video and link. I also like your pictures but I think you got some of them mixed up. Other than that great job.

2. Good job, Paul! I liked all the colours you used in your post and I also liked the video and your link. I thought your post was very well done. Thank you for showing your work when answering the questions too.

3. Everything was great, but I suggest that next time you do a fill in the blank work you should type out the question and highlight the word being used because it was alittle confusing.

4. Great job Paul. It is so neat and I like the pictures. I love the colours that you added and the link and video was very helpful.