Turn to Page 84. Draw each of the triangle including all labels Turn to Page 84. Draw each of the triangle including all labels. Be specific when answering the question below: Describe how Triangle ABC and Triangle A’B’C’ are similar.
Turn to Page 84. Draw each of the triangle including all labels Turn to Page 84. Draw each of the triangle including all labels. Be specific when answering the question below: Describe how Triangle ABC and Triangle A’B’C’ are similar. 18.0 26.0 4.5 6.5 30.0 7.5
rise run For every 3 units we go UP, we will go 2 units to the RIGHT The ratio that creates the slope of the line will always be: For every 3 units we go UP, we will go 2 units to the RIGHT
(movements ______ or ______ ) (movements _______ or _______ ) Vertical Change vs. Horizontal Change: up down (movements ______ or ______ ) (movements _______ or _______ ) left right
Describe why the following two triangles are similar: Page 86 Describe why the following two triangles are similar: Triangle ABC and Triangle CDE
Describe why the following two triangles are similar: Page 86 Describe why the following two triangles are similar: Triangle FGH and Triangle CDE
After completing the table, describe: Page 86 After completing the table, describe: How do the slopes compare? How you know three triangles are similar? 3 ÷ 4 = 3/4 3 4 6 ÷ 8 = 6/8 6 8 1.5 ÷ 2 = 1.5/2 1.5 2
Page 88 Three slopes listed will not be used (will not have a match) We will only be using A,B,C on this page. 2 3 6 5 2 5 Three slopes listed will not be used (will not have a match)
Can you identify the mistake that was made in calculating the slope? rise run
Page 90 Directions: Label the lines as shown using the letters A,B, and C. Use the following sentence frame when describing the slope of the line: “The slope of line A is ______” “The slope of line B is ______” “The slope of line C is ______” The slopes are given in the directions above. A B C
Page 92 How can you prove that these two triangles are similar?
The two triangles are similar because __________________________________________________. Line segment XY is ______ units in length. Triangle RST has a vertical side of ____ ÷ horizontal side of _____. Triangle XYZ has a vertical side of ____ ÷ horizontal side of _____. Therefore, the slope of the green line is _______ (RISE ÷ RUN)
Which lines have positive slopes? Which lines have negative slopes? Which line has the steepest slope? Are any two lines shown parallel?
There are four types of slope There are four types of slope. Can you describe what characteristic(s) each type of line has?
“Cool Down” Which line has a slope of 1? Which line has a slope of 2? Which line is steeper?