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Area of a Triangle

Area of a Triangle

- Recall the formula for the area of a

parallelogram AP b x h

Area of a Triangle

- Recall the formula for the area of a

parallelogram AP b x h

Area of a Triangle

- Recall the formula for the area of a

parallelogram AP b x h - Notice how the parallelogram can be bisected into

two congruent triangles, each with the same base

and height as the parallelogram.

Area of a Triangle

- Recall the formula for the area of a

parallelogram AP b x h - Notice how the parallelogram can be bisected into

two congruent triangles, each with the same base

and height as the parallelogram.

Area of a Triangle

- Recall the formula for the area of a

parallelogram AP b x h - Notice how the parallelogram can be bisected into

two congruent triangles, each with the same base

and height as the parallelogram. - The formula for the area of a triangle is

therefore similar to that of - the parallelogram. The same two dimensions are

being multiplied, but this time the product must

be cut in half.

Area of a Triangle

- Recall the formula for the area of a

parallelogram AP b x h - Notice how the parallelogram can be bisected into

two congruent triangles, each with the same base

and height as the parallelogram. - The formula for the area of a triangle is

therefore similar to that of - the parallelogram. The same two dimensions are

being multiplied, but this time the product must

be cut in half. - AT b x h 2

Area of a Triangle

- Ex) Calculate the area of the following

triangle

2.2 cm

2.0 cm

2.4 cm

2.8 cm

Area of a Triangle

- Ex) Calculate the area of the following

triangle - Which side should we use as the base?

2.2 cm

2.0 cm

2.4 cm

2.8 cm

Area of a Triangle

- Ex) Calculate the area of the following

triangle - Which side should we use as the base?
- This one, because we know the

corresponding height.

2.2 cm

2.0 cm

2.4 cm

2.8 cm

Area of a Triangle

- Ex) Calculate the area of the following

triangle - Which side should we use as the base?
- This one, because we know the

corresponding height.

2.2 cm

2.0 cm

2.4 cm

2.8 cm

Area of a Triangle

- Ex) Calculate the area of the following

triangle - Which side should we use as the base?
- This one, because we know the

corresponding height. - AT b x h 2

2.2 cm

2.0 cm

2.4 cm

2.8 cm

Area of a Triangle

- Ex) Calculate the area of the following

triangle - Which side should we use as the base?
- This one, because we know the

corresponding height. - AT b x h 2
- 2.4 cm x 2.0 cm 2

2.2 cm

2.0 cm

2.4 cm

2.8 cm

Area of a Triangle

- Ex) Calculate the area of the following

triangle - Which side should we use as the base?
- This one, because we know the

corresponding height. - AT b x h 2
- 2.4 cm x 2.0 cm 2
- 4.8 cm2 2

2.2 cm

2.0 cm

2.4 cm

2.8 cm

Area of a Triangle

- Ex) Calculate the area of the following

triangle - Which side should we use as the base?
- This one, because we know the

corresponding height. - AT b x h 2
- 2.4 cm x 2.0 cm 2
- 4.8 cm2 2
- 2.4 cm2

2.2 cm

2.0 cm

2.4 cm

2.8 cm

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For a small fee you can get the industry's best online privacy or publicly promote your presentations and slide shows with top rankings. But aside from that it's free. We'll even convert your presentations and slide shows into the universal Flash format with all their original multimedia glory, including animation, 2D and 3D transition effects, embedded music or other audio, or even video embedded in slides. All for free. Most of the presentations and slideshows on PowerShow.com are free to view, many are even free to download. (You can choose whether to allow people to download your original PowerPoint presentations and photo slideshows for a fee or free or not at all.) Check out PowerShow.com today - for FREE. There is truly something for everyone!

For a small fee you can get the industry's best online privacy or publicly promote your presentations and slide shows with top rankings. But aside from that it's free. We'll even convert your presentations and slide shows into the universal Flash format with all their original multimedia glory, including animation, 2D and 3D transition effects, embedded music or other audio, or even video embedded in slides. All for free. Most of the presentations and slideshows on PowerShow.com are free to view, many are even free to download. (You can choose whether to allow people to download your original PowerPoint presentations and photo slideshows for a fee or free or not at all.) Check out PowerShow.com today - for FREE. There is truly something for everyone!

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