how do you find the area of a right triangle?
DESCRIPTION
How do you find the area of a right triangle?. In this lesson you will learn how to find the area of a right triangle by composing a rectangle. You find the area of a rectangle by multiplying length times width. width. length. Only finding the area of a rectangle and not the triangle. - PowerPoint PPT PresentationTRANSCRIPT
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How do you find the area of a right triangle?
![Page 2: How do you find the area of a right triangle?](https://reader036.vdocument.in/reader036/viewer/2022062520/56815b5a550346895dc94132/html5/thumbnails/2.jpg)
In this lesson you will learn how to find the area of a right
triangle by composing a rectangle.
![Page 3: How do you find the area of a right triangle?](https://reader036.vdocument.in/reader036/viewer/2022062520/56815b5a550346895dc94132/html5/thumbnails/3.jpg)
Let’s ReviewLet’s Review
You find the area of a rectangle by multiplying length times width.
length
widt
h
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Let’s ReviewA Common MistakeOnly finding the area of a rectangle and not
the triangle.
![Page 5: How do you find the area of a right triangle?](https://reader036.vdocument.in/reader036/viewer/2022062520/56815b5a550346895dc94132/html5/thumbnails/5.jpg)
Let’s ReviewCore LessonA right triangle is half of a rectangle.
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Let’s ReviewCore Lesson Let’s find the area of one of the sails.
length x width
4 units7
units
7x 428 units¤
2821 4units¤
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Let’s ReviewCore Lesson
7 units5
units
7x 535 units¤17.5 units¤
2
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In this lesson you have learned how to find the area of a right
triangle by composing a rectangle.
![Page 9: How do you find the area of a right triangle?](https://reader036.vdocument.in/reader036/viewer/2022062520/56815b5a550346895dc94132/html5/thumbnails/9.jpg)
Let’s ReviewGuided PracticeFind the area of the right triangle.
21 units
8 un
its 21x 8168
84 units¤units¤
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Let’s ReviewExtension Activities
Find an object in the classroom that is in the shape of a right triangle. Measure the sides to the nearest half inch. Then, using grid paper, find the area of the triangle using strategies from this video.
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Let’s ReviewExtension Activities
Draw and then cut out 5 sets of congruent right triangles on grid paper. Tape each pair of congruent triangles together to form a rectangle. Label both the area of the rectangle and the area of each triangle on each set.
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Let’s ReviewQuick Quiz
1. Find the area. 2. Find the area.