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# Sec. 10.2

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### Sec. 10.2

1. 1. Learning Target:Students will learn how to calculate the area of triangles.<br />
2. 2. What is the area formula for a parallelogram?How is that related to how we find the area of a triangle? <br />
3. 3. What is the area formula for a parallelogram?A = bhHow is that related to how we find the area of a triangle?<br />
4. 4. Vocabulary:Base of the triangle: the length of any of its sides.Height of a triangle: is the perpendicular distance between the base and the vertex opposite to that side.<br />
5. 5. Find the area of the triangle.http://mathfacts.info/images/trianglemiddle.gif<br />
6. 6. Find the area of the triangle.http://image.tutorvista.com/Qimages/QD/45946.gif<br />
7. 7. Find the area of the triangle.A = 30 in2http://image.tutorvista.com/Qimages/QD/45946.gif<br />
8. 8. Find the area of the triangle.http://cdis.missouri.edu/exec/data/courses2/8224/lesson01/lesson_clip_image027.gif<br />
9. 9. Find the area of the triangle.A = 24 in2http://cdis.missouri.edu/exec/data/courses2/8224/lesson01/lesson_clip_image027.gif<br />
10. 10. Find the height of a triangle given the following information.A = 45 in2b = 10 inh = ?<br />
11. 11. Find the height of a triangle given the following information. A = 45 in2b = 10 inh = ? h = 9 in<br />
12. 12. Find the area of the figure.http://www.bbc.co.uk/scotland/learning/bitesize/standard/maths_i/images/g466.gif<br />
13. 13. Find the area of the figure.A = 30 cm2http://www.bbc.co.uk/scotland/learning/bitesize/standard/maths_i/images/g466.gif<br />
14. 14. Find h and the area of the figure.http://www.alamo.edu/SAC/slac/images/exers/graphs/m301pic89.gif<br />
15. 15. Find h and the area of the figure.h = 4 cmA = 67.5 cm2http://www.alamo.edu/SAC/slac/images/exers/graphs/m301pic89.gif<br />
16. 16. Can you calculate the area of triangles?<br />