# Thread: i need help understanding

1. ## i need help understanding

we are studying polygons and trapezoids in my math class. i dont understand any of it. and we are also studying kites in the class.
can anyone help me understand or give me the formulas to figure it out.
btw. the "math class" is high school informal geometry.
plz and ty
dustergirl

2. Originally Posted by dustergirl
we are studying polygons and trapezoids in my math class. i dont understand any of it. and we are also studying kites in the class.
can anyone help me understand or give me the formulas to figure it out.
btw. the "math class" is high school informal geometry.
plz and ty
dustergirl
Hi dustergirl,

You need to fill us in on what you do not understand. It would be helpful to you if you knew the characteristics of these polygons. What formulas do you need? Area? Perimeter? Be more specific.

3. well we are learning the area as well as the perimeter. im just confused in general. if you could help me with this it would be much obliged.

4. Greetings,

In lower classes, when you first encounter polygons, I trust you are merely required to know things by heart. For instance the formula for finding a trapezoid's area, S = (a+b)*h/2, a and b being the lenght of the bases, h - height of the trapezoid. In upper classes you will probably see why this is so, but for now: write it down several times until you remember it.

Knowing the definitions for some polygons may also reduce your confusion:

For example: what is a trapezoid?
It is a quadrilateral with two parallel sides. ( Quadrilateral is a four-sided polygon )
If it has two more parallel sides, then it becomes a rectangle or parallelogram. If all the sides are equal, it is a square or rhombus.

You can make use of Google's glossary to find definitions for various objects, like: define: quadrilateral - Google Search

You also very likely to find easy to understand information and explanations about basic shapes on Wikipedia .

Have a safe and productive day.

5. Originally Posted by dustergirl
well we are learning the area as well as the perimeter. im just confused in general. if you could help me with this it would be much obliged.
Hi dustergirl,

Click on this link I provided for you in my first post? Did it help?

6. Originally Posted by masters
Hi dustergirl,

Click on this link I provided for you in my first post? Did it help?
yes it helped very much. for some reason when the teacher explains it its what confused kids call greek or some foreign language (lol) but now that i looked at that link yes i understand much better.
thank you.

7. Originally Posted by dustergirl
yes it helped very much. for some reason when the teacher explains it its what confused kids call greek or some foreign language (lol) but now that i looked at that link yes i understand much better.
thank you.
Hi dustergirl,

You're welcome. Post any specific question you may have and we'll be happy to answer.

8. if i ever need help again i will let you know. (it shall be in the near future.)
lol

9. Originally Posted by masters
Hi dustergirl,

You're welcome. Post any specific question you may have and we'll be happy to answer.
ya the near future was sooner than i thought. its a normal polygon and the figures they are giving me are 11 m and for the base its 17 meters.
i must find the height and the area of the polygon in question.

10. Originally Posted by dustergirl
ya the near future was sooner than i thought. its a normal polygon and the figures they are giving me are 11 m and for the base its 17 meters.
i must find the height and the area of the polygon in question.
Hi dustergirl,

I need to know what kind of polygon it is. Be more specific when describing the measures of the sides.

11. Originally Posted by masters
Hi dustergirl,

I need to know what kind of polygon it is. Be more specific when describing the measures of the sides.
sorry its a parallelogram with a triangle on one side. i am so confused.

12. It seems like a trapezoid to me.
The presence of height and bases would be consistent with this presumption.
However, if 11 is the other base, finding the height may not be possible. Hence the area since it is height-dependent.
Possibly the same is valid if 11 is the lenght of the sides?

Either not enough data is given, or the presumption of the polygon being a trapezoid is invalid.

Perhaps you could provide us with a diagram?

13. I trust I have got this right.

The configuration must be identical with the one given below.
Now, all the red lines serve as a height, however finding the one in the triangle would be easiest.
There are numerous ways for finding it, but I am uncertain whether I can show you a way which you have already studied.
For instance, you could use