Некоторые свойства прямоугольных треугольников. Задачи на готовых чертежах
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![Некоторые свойства прямоугольных треугольников. Задачи на готовых чертежах](/images/pdf.png)
Слайд 2
![30˚ х 2х 2х+х=12 3х = 12 Х = 4 4 8](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/1443838/slide-1.jpg)
30˚
х
2х
2х+х=12
3х = 12
Х = 4
4
8
Слайд 3
![90˚: 3 = 30˚ 30˚ 60˚ х 2х 2х – х](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/1443838/slide-2.jpg)
90˚: 3 = 30˚
30˚
60˚
х
2х
2х – х = 15
Х = 15
15
Слайд 4
![36 18 60˚ 30˚ 9 36 – 9 = 27 27](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/1443838/slide-3.jpg)
Слайд 5
![30˚ 36 30˚ 72 72 - 18 = 54 54](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/1443838/slide-4.jpg)
Слайд 6
![Δ ЕОС = Δ ОDC ОЕ = ОD = 18 18](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/1443838/slide-5.jpg)
Δ ЕОС = Δ ОDC
ОЕ = ОD = 18
18
Слайд 7
![26 ΔPST = ΔTSF](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/1443838/slide-6.jpg)
Слайд 8
![70˚ 50˚ 180˚- 50˚- 20˚= 110˚](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/1443838/slide-7.jpg)
Слайд 9
![60˚ 30˚ 36 : 3 = 12 12 12 12 24](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/1443838/slide-8.jpg)
60˚
30˚
36 : 3 = 12
12
12
12
24
Слайд 10
![30˚ 30˚ 14](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/1443838/slide-9.jpg)
Слайд 11
![50˚ 40˚ 25˚ 45˚ 25˚ EA =ЕD BE=ED Δ BED -равнобедренный](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/1443838/slide-10.jpg)
50˚
40˚
25˚
45˚
25˚
EA =ЕD
BE=ED
Δ BED -равнобедренный
(180˚- 40˚) : 2 = 70˚
70˚
70˚
=EB
Слайд 12
![30˚ 30˚ 180˚- 60˚ = 120˚ 120˚](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/1443838/slide-11.jpg)
30˚
30˚
180˚- 60˚ = 120˚
120˚
Слайд 13
![13 13 60˚ 60˚ 60˚ 30˚ 13: 2 = 6,5 6,5](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/1443838/slide-12.jpg)
13
13
60˚
60˚
60˚
30˚
13: 2 = 6,5
6,5
6,5
6,5 : 2 =3,25
3,25
13 – 3,25 = 9,75
9,75
Слайд 14
![ΔPNS = ΔPMS ∟NPS = ∟MSP ( 180 – 130 )](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/1443838/slide-13.jpg)
ΔPNS = ΔPMS
∟NPS = ∟MSP
( 180 – 130 ) : 2
= 25˚
25˚
25˚
∟NPS = ∟MSP
90˚ - 25˚= 65˚
65˚
65˚
180˚ - 65˚· 2 = 50˚
50˚