1. Learning Target:Students will learn how to calculate the area of triangles.

2. What is the area formula for a parallelogram?How is that related to how we find the area of a triangle?

3. What is the area formula for a parallelogram?A = bhHow is that related to how we find the area of a triangle?

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.

5. Find the area of the triangle.http://mathfacts.info/images/trianglemiddle.gif

6. Find the area of the triangle.http://image.tutorvista.com/Qimages/QD/45946.gif

7. Find the area of the triangle.A = 30 in2http://image.tutorvista.com/Qimages/QD/45946.gif

8. Find the area of the triangle.http://cdis.missouri.edu/exec/data/courses2/8224/lesson01/lesson_clip_image027.gif

9. Find the area of the triangle.A = 24 in2http://cdis.missouri.edu/exec/data/courses2/8224/lesson01/lesson_clip_image027.gif

10. Find the height of a triangle given the following information.A = 45 in2b = 10 inh = ?

11. Find the height of a triangle given the following information. A = 45 in2b = 10 inh = ? h = 9 in

12. Find the area of the figure.http://www.bbc.co.uk/scotland/learning/bitesize/standard/maths_i/images/g466.gif

13. Find the area of the figure.A = 30 cm2http://www.bbc.co.uk/scotland/learning/bitesize/standard/maths_i/images/g466.gif

14. Find h and the area of the figure.http://www.alamo.edu/SAC/slac/images/exers/graphs/m301pic89.gif

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

16. Can you calculate the area of triangles?