How to find the area of a triangle

To find the area of a triangle, it is really easy. All you have to do, if you want to find the area of a triangle, is, you can cut the triangle in half, so that each half, when you put them together again, it makes its original form. Then, you measure the base times height, and record them down on a peice of paper to make it easier to remember. Then, you have it as a times question. You times the two numbers together, and then get the answer. Then, you divide it by two, and the two repersents how many peices you had to divide the figure into. Finding the area of the triange isn't that hard. After you do it a couple times, it will be pretty easy!

Tuesday, March 20, 2007

Area
In class, we learned how to find the area of an parallelogram, and how to find the area of a figure that is not on a peice of grid paper. First, to make it easier, you can count up all of the full squares in the figure. Then, count up all of the half squres, and then add the two halfs together to make one whole one. If you want to also find the area of a figure, you can find it adding up length+ width,+ length+ width. When you want to find the area of a figure, add up the vertical side of the shape up first, and then the horizontal side of the figure. Then, times them together, and then you should get the area of the figure. What makes the shape easier for me to follow, and get the area if, and we also did it in class. We had a triangle that would be part of the shape, and then move it over to the oppisite side of the figure, to get a triangle ( square) Then, you find the area of the shape easier that way instead of having a weird looking shape to find the perimeter and area of it.

Patterning Question

I wasn't quite sure about this math question. I think that the answer is 10, because one side is5 cm, and the other side of the triangle is 41 mm. So I think that the answer is 10, or probably around 10. And if you add up all of the sides, they basicly add up to 16. I think that I may need some more help on these type of questions. I know all of the primeters in cm, and mostly all of the answers in mm as well. I know how to do the primeter basicly, but I think I need to learn a little bit more on how to use, and deal with the numbers in mm. I think this answer is 10 for the missing side of the triangle.

Text Book questions

I think that for the text book questions, Domenico has the easiest way to do the problem, because I think he makes it more simplistic and easier to follow. I also think that Owen also has a good way of solving the question. When he explains it, it wasn't as much steps to take to solve the problem, and with Domenico, he explains it easier, but with more steps to take to solve it. Also, Owen explains it more mathimatical tearms. I also know what length and width is, so that makes it easier, and more straight forward for me to do it.

Try this on the Text Book page 277.

Find the primeter of each figure:

Part 1

1) 9 cm
2) 8 cm
3) 5 cm
4) 11 cm

Patterning

I think that patterning is kind of easy and hard in it's own ways. I think that when you do the graph, or the T- Table, and need to find the pattern, I sometimes get confused of where to start. Another thing I find kind of confusing, is to find the rule of it. Some things I find rather easy, is to continue some of the patterns, like, what shape comes next, and most of the graphing assignments. I also know how to label the graph, and how to sometimes do the T- charts. I mostly know how to do the Patterning unit, and learned also from going onto the math blog, by the people who posts the instructions on how to do the Patterning unit. I learned more in there too.