Randy's math blog

Friday, October 31, 2008

math reflections investigation 4

Answer the following questions on YOUR blog as a post. Use the same title as mine for your post. Write your answers in complete sentences! An easy way to do this is to copy and paste the questions below onto your post and then put your answers in a different color!1) What has to be the same in order for two parallelograms to be similar?2) Describe a way to find a missing side length in a pair of similar figures.3) I have a small isosceles triangle with a base of 3 inches and other sides are 4 inches.I want to create a similar isosceles triangle with a base of 7.5 inches.What should the other side lengths be and why?

1)The angles and the scale factor.
2)You find the scale factor and on the one with the number times it by the scale factor to get the side lengths.
3)The other side lengths would be 8inches because the scale factor is 2 so you make the side lengths 2 times bigger.

Friday, October 24, 2008

assignment #3 block 2

1) The original side lengths are 8in. and 10in. and on the piece of paper they are 4in. by 5in.
2) The angles are the same because they are corresponding to the original piece of paper to the new piece of paper.
3) The area is only 2x bigger cause it is 50% of the original.

Wednesday, October 15, 2008

math assignment 4


1) By the size of the hats lengths. By finding the ones that are not similar length sizes to Mug’s.


2) It would be similar because the side lengths are all multiplied by the same number. It is times four. Sixteen.