Download presentation

Presentation is loading. Please wait.

Published byMuhammad Carvin Modified over 3 years ago

1
Similar Right Triangles Geometry Chapter 9 A BowerPoint Presentation

2
Index card activity Cut an index card diagonally. Here is the shape you will have. [You actually have TWO of these triangles. Save one of them for later!]

3
Index card activity Draw an altitude from the right angle to the hypotenuse (you dont need to use a protractor)

4
Index card activity How many triangles do you see?

5
Index card activity Cut along the altitude to split the big triangle into two smaller right triangles.

6
Index card activity You now have three triangles (this is the time to use the other half of the index card, which is exactly like your original triangle). What do you notice about these three triangles?

7
Index card activity You now have three triangles (this is the time to use the other half of the index card, which is exactly like your original triangle). What do you notice about these three triangles? They are all SIMILAR to each other!

8
Parts of a right triangle

9
Here is an altitude from the right angle to the hypotenuse.

10
Parts of a right triangle Here is an altitude from the right angle to the hypotenuse.

11
Parts of a right triangle For our proportions, alt = altitude and hyp = all of the hypotenuse

12
Parts of a right triangle = part of the hypotenuse next to

13
Altitude proportion

14
Leg 1 proportion

15
Leg 2 proportion

16
Summary of proportions

17
Solve for x Does solving for x involve an altitude?

18
Solve for x Yes – x is an altitude

19
Solve for x Yes – x is an altitude

20
Solve for x Yes – x is an altitude

21
Solve for x Yes – x is an altitude

22
Solve for y Does solving for y involve an altitude?

23
Solve for y No – y is

24
Solve for y y is

25
Solve for y y is

26
Solve for y y is

27
Solve for z Does solving for z involve an altitude?

28
Solve for z No – z is

29
Solve for z z is

30
Solve for z z is

31
Solve for z z is

Similar presentations

OK

Special Right Triangles. 45-45-90 Right Isosceles Triangle Leg Hypotenuse Legs are congruent Hypotenuse = Legs =

Special Right Triangles. 45-45-90 Right Isosceles Triangle Leg Hypotenuse Legs are congruent Hypotenuse = Legs =

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on bluetooth communications Ppt on network switching modes Ppt on sociology of education Ppt on op amp circuits book A ppt on leadership Ppt on history of atom Ppt on different solid figures nets Ppt on energy giving food for kids Ppt on ict in teaching Class 7 science ppt on light