Middle School Math Book 1 - Chapter 10.2 - Area of a Triangle - Objective: Find the area of a triangle.

1. 10.2 – Area of a Triangle Joseph Williams Melvin E. Sine Elementary [email_address] Objective: Find the area of a triangle.

2. Vocabulary Base of a triangle – p. 480 – length of the sides of any triangle . Height of a triangle – p. 480 – perpendicular distance between the side whose length is the base and vertex opposite that side.

3. Area of a Triangle A = ½bh Area = one half times base times height Base, b Base, b Height, h Height, h

4. Area of a Triangle 12 feet 10 feet A = ½ bh 10 x 12 2 = 120 2 Area = 60 ft squared

5. Find the Area 10 m 4 m 3 m The Rectangles area is 40 m sq. The Triangles area is 15 m sq. The total area is 55 m squared.