+0

Geometry Test Part 2

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https://prnt.sc/hxrszx

https://prnt.sc/hxrt6n part 1

https://prnt.sc/hxrt8a part 2

https://prnt.sc/hxrtrc part 1

https://prnt.sc/hxrtsr part 2

https://prnt.sc/hxrtu0 part 3

Jan 8, 2018

#1
+2 (a)  Yes. m∠ACB  =  m∠ECD since they are vertical angles, and  m∠ABC  =  m∠CDE . So by the AA congruency postulate,  △ABC ~ △EDC  .

(b)  Since  △ABC ~ △EDC  ....

DE / DC   =   BA / BC

32 / 22    =   BA / 100     Multiply both sides of the equation by 100 .

145.45     ≈   BA

The width of the river is approximately  145.45 ft.

Jan 8, 2018

#1
+2 (a)  Yes. m∠ACB  =  m∠ECD since they are vertical angles, and  m∠ABC  =  m∠CDE . So by the AA congruency postulate,  △ABC ~ △EDC  .

(b)  Since  △ABC ~ △EDC  ....

DE / DC   =   BA / BC

32 / 22    =   BA / 100     Multiply both sides of the equation by 100 .

145.45     ≈   BA

The width of the river is approximately  145.45 ft.

hectictar Jan 8, 2018
#2
+2

Thanks!

Severoth  Jan 8, 2018
#3
0

Thank you so much!

Severoth  Jan 8, 2018