I need to find out more information on:

- Corresponding Angles
- Interior Angles
- Supplementary Angles
- Complementary Angles
- Alternate Angles

For tomorrow's test... I don't understand this at all, it's very confusing.

Printable View

- Feb 12th 2008, 10:23 AM~NeonFire372~Need some sort of explanation of different kinds of angles
I need to find out more information on:

- Corresponding Angles
- Interior Angles
- Supplementary Angles
- Complementary Angles
- Alternate Angles

For tomorrow's test... I don't understand this at all, it's very confusing. - Feb 12th 2008, 10:27 AMTKHunny
If you already have seen materials on these things, will another textbook from us make any difference? They are just definitions. What's tricky about it? It's like reading a dictionary. Memorize!

- Feb 12th 2008, 10:31 AM~NeonFire372~
- Feb 12th 2008, 10:38 AMtopher0805
Let's use this diagram as an example.

http://www.isotiles.com/workbook/gifs/parallelac.gif

When two lines are crossed by another line, as in the diagram above, the angles in matching corners are**corresponding**. The two $\displaystyle c$'s in this drawing are corresponding.

$\displaystyle a$ and $\displaystyle c$ are**supplementary**angles because they add to 180 degrees. As you can see, they do not necessarily have to be right beside each other. Any two angles that add to 180 are supplementary.

An interior angle is an acute angle that adds with another angle to 180 degrees. In this case, $\displaystyle a$ would be an interior angle because it is acute (less than 90 degrees) and adds with $\displaystyle c$ to 180 degrees.

There are two types of alternate angles, interior and exterior. These are just angles that add with another angle to 180 degrees. An exterior is obtuse, while an interior is acute. In this diagram, $\displaystyle a$ is acute and $\displaystyle c$ is obtuse.

http://www.analyzemath.com/Geometry/angle_5.gif

In this picture, $\displaystyle a$ and $\displaystyle b$ are**complementary**angles because they add to 90 degrees. - Feb 12th 2008, 10:42 AM~NeonFire372~
- Feb 12th 2008, 04:02 PMTKHunny
Yes. Many students are encouraged by the simple realization that there is nothing magic about it. Some things simply should be memorized.

Quote:

If you didn't want to answer or feel like it's too stupid of a question, then don't post. It's simple.

Quote:

My teacher gave virtually no explanation and the textbook doesn't help either.