1. 5 minute check 1 Click the mouse button or press the Space Bar to display the answers.

2. 5 minute check 1a

3. 6-3 Area of a Triangle

4. Video Tutor Help Finding the area of trianglesFinding the area of triangles (6-3) Area of a Triangle Khan Academy Area of polygons Brain Pop

5. Video Tutor Help Finding the measure of an angle Finding the area of parallelograms Finding the area of triangles Finding the area of trapezoids Finding circumference Finding the area of circles

6. Worksheets Daily Notetaking Guide Worksheets Version A Practice, Guided Problem Solving Lesson 6-3 Practice 6-3 Guided Problem Solving 6-3

7. Vocabulary Practice Vocabulary (Electronic) Flash Cards Percents Vocabulary 6A: Graphic Organizer Vocabulary 6B: Reading Comprehension Vocabulary 6C: Reading/Writing Math Symbols Vocabulary 6D: Visual Vocabulary Practice Vocabulary 6E: Vocabulary C Vocabulary 6F: Vocabulary Review Puzzle

8. Additional Lesson Examples Step-by-Step Examples Lesson 6-3

9. Lesson Readiness Lesson Quiz Problem of the Day Lesson 6-3

18. Example 5-2a Find the area of the triangle. The base is 3 meters. The height is 4 meters. Area of a triangle Replace b with 3 and h with 4. Answer: The area of the triangle is 6 square meters. Multiply. Find Areas of Triangles

19. Example 5-2a Find the area of the triangle. The base is 3.9 feet. The height is 6.4 feet. Area of a triangle Replace b with 3.9 and h with 6.4. Find Areas of Triangles

20. Example 5-2a Answer: The area of the triangle is 12.48 square feet. Multiply.

21. Example 1-2a Find the area of the triangle. The base is 22 inches. The height is 4 inches. Area of a triangle Replace b with 22 and h with 4. Find the Area of a Triangle

22. Find the area of the parallelogram. The area is 216 ft 2. A = bh Use the area formula. LESSON 6-3 = (24)(9) Substitute. = 216 Simplify. Area of a Parallelogram Additional Examples

25. A backyard pool has a perimeter of 90 ft and an area of 500 ft 2. What are the pool’s length and width? LESSON 6-3 Area of a Parallelogram P = 2 (length + width) 90 = 2 (l + w) 90 2 2 (l + w) 2 = Simplify 90 2 = (l + w) 30 + 15 = 4530  15 = 450 35 + 10 = 4535  10 = 350 25 + 20 = 4525  20 = 500 The pool has a length of 25 ft and width of 20 ft. 45 = l + w To determine length and width, use trial and error. Additional Examples