Question

find the value of x ,in ABCD ,c=80,D=70 ,b=x,a=x

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Answer 1

Answer:

x=105°

Step-by-step explanation:

Given,c=80,D=70 ,b=x,a=x

Therefore by applying the angle sum property

a+b+c+d=360°

x+x+80+70=360°

2x+150=360°

2x=360-150

2x=210°

x=210/2

x=105°

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Hope it helps...

Answer 2

Question:-

find the value of x ,in ABCD ,c=80,D=70 ,b=x,a=x

Given:-

c=80,

D=70 ,

b=x,

a=x.

To find:-

Value of x.

Solution:-

In the quadrilateral ABCD,

We know that,

Sum of angles of any quadrilateral is 360°.

Therefore:-

<A + <B + <C + <D = 360°

$x + x + 80 + 70 = 360$

$2x + 150 = 360$

$2x = 360 - 150$

$2x = 210$

$x = \frac{210}{2}$

$x = 105$

hope it's helpful....

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