Module 5 lesson 2 4
- 7. Module 5 Lesson 24 Area of All Triangles Combined.notebook 7 May 27, 2014 a = bh4cm 9cm a =4cm 9cm
- 10. Module 5 Lesson 24 Area of All Triangles Combined.notebook 10 May 27, 2014 Remember in Lesson 1...... How do we find the area of a rectangle? How do we find the area of a parallelogram? We needed to find the HEIGHT by making a right angle with the base...
- 11. Module 5 Lesson 24 Area of All Triangles Combined.notebook 11 May 27, 2014 4cm 3cm 3cm 6cm 8cm 10cm 3cm 4cm It was easy to find the area of a right triangle because the side was the height. But what about these??
- 12. Module 5 Lesson 24 Area of All Triangles Combined.notebook 12 May 27, 2014 Notice that by drawing the altitude we have created two right triangles. How can we calculate the area of the entire triangle? 1. p. 11
- 17. Module 5 Lesson 24 Area of All Triangles Combined.notebook 17 May 27, 2014 Closing Please take out your exit ticket for Lesson 2,3,4, close your binder, and complete the exit ticket. This will be collected. § How are the area formulas of rectangles and right triangles related? ú Every type of triangle fits inside exactly half of a rectangle that has the same base and height lengths. § When a triangle is not a right triangle, how can you determine its base and height? ú The height of a triangle is the length of the altude. The altude is the line segment from a vertex of a triangle to the line containing the opposite side (or the base) that is perpendicular to the base. § Why does the area formula for a triangle work for every triangle? ú Every type of triangle fits inside exactly half of a rectangle that has the same base and height lengths.