## Wednesday, December 15, 2010

## Friday, November 19, 2010

## Tuesday, November 2, 2010

## Thursday, October 28, 2010

### Quadrilaterals

up next Quadrilaterals

knowing the properties of each.

solving problems with each

constructing each

knowing the properties of each.

solving problems with each

constructing each

## Friday, October 22, 2010

### Constructions

Construct a Circumcircle (circumcenter.....perpendicular bisectors

Why do they only do two?? The definition/theorem says intersection of 3????

Construct an Incircle (incenter....angle bisectors)

That last step is to help draw the circle.

It touches at a location perpendicular from the point to the side.

BTW

Median (needs midpoint)

Altitude (needs a perpendicular) think of that top point as a vertex

(onlinemathlearning video.... another video )

3 altitudes intersect (concurrency) and make an orthocenter (& therefor orthocircle)

Midsegment (needs 2 midpointx)

Do you know the definitions of these?

Why do they only do two?? The definition/theorem says intersection of 3????

Construct an Incircle (incenter....angle bisectors)

That last step is to help draw the circle.

It touches at a location perpendicular from the point to the side.

BTW

Median (needs midpoint)

Altitude (needs a perpendicular) think of that top point as a vertex

(onlinemathlearning video.... another video )

3 altitudes intersect (concurrency) and make an orthocenter (& therefor orthocircle)

Midsegment (needs 2 midpointx)

Do you know the definitions of these?

## Monday, October 18, 2010

## Tuesday, October 12, 2010

## Wednesday, October 6, 2010

### PolygonInteriorAngles

Here is a website to help you review the basics of Polygn interior & exterior angles

Remember to start with (n-2)*180

Here is a video.

(tutorvista help RegentsPrep help)

Remember to start with (n-2)*180

Here is a video.

(tutorvista help RegentsPrep help)

## Thursday, September 16, 2010

### Relative error

Here is a short video on calculating relative error.

(how far off from the "real" number are you ; in terms of %)

(how far off from the "real" number are you ; in terms of %)

## Wednesday, September 1, 2010

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