ameliasta11
Answered

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In the accompanying diagram of the parallelogram ABCD, AB is extended to E such that CB is congruent to CE. If m< ADC = 100, what is m

In The Accompanying Diagram Of The Parallelogram ABCD AB Is Extended To E Such That CB Is Congruent To CE If Mlt ADC 100 What Is M class=

Sagot :

ortizgloria563

Answer:

CDE = 10

Step-by-step explanation:

in parallelogram, adjacent angle are supplementary.

A+ B = 180

100 + B = 180

B = 180 - 100

B = 18

E ≅ B

E = 80

EC⊥ DC

DCE = 90

in ΔDCE,

DCE + CED + CDE= 180 {Angle sum property of triangle}

90 + 80 + CDE = 180

170 + CDE = 180  

CDE = 180 - 170

CDE = 10

Hope this helps! :)

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