1417.5 is the answer and this is a tricky question.
the answer is false
.....................................
Answer:
20+14x
Step-by-step explanation:
Answer:
Option D
Step-by-step explanation:
In this question we use properties of parallelogram and angle sum property of a triangle.
In parallelogram ABCD
![\angle ABC=40^\circ](https://tex.z-dn.net/?f=%20%5Cangle%20ABC%3D40%5E%5Ccirc%20)
As, we know that opposite angles of parallelogram are equal
Therefore,
![\angle ABC =\angle ADC =40^\circ](https://tex.z-dn.net/?f=%20%5Cangle%20ABC%20%3D%5Cangle%20ADC%20%3D40%5E%5Ccirc%20)
Now, in triangle ADC
We know that sum of all the angles of a triangle is ![=180^\circ](https://tex.z-dn.net/?f=%3D180%5E%5Ccirc)
![\angle ACD +\angle ADC +\angle DAC =180^\circ](https://tex.z-dn.net/?f=%5Cangle%20ACD%20%2B%5Cangle%20ADC%20%2B%5Cangle%20DAC%20%3D180%5E%5Ccirc)
![57^\circ +40^\circ +\angle DAC =180^\circ](https://tex.z-dn.net/?f=57%5E%5Ccirc%20%2B40%5E%5Ccirc%20%2B%5Cangle%20DAC%20%3D180%5E%5Ccirc)
![97^\circ + \angle DAC = 180^\circ](https://tex.z-dn.net/?f=97%5E%5Ccirc%20%2B%20%5Cangle%20DAC%20%3D%20180%5E%5Ccirc%20)
Subtracting 97 from both sides we get
![\angle DAC = 180^\circ - 97^\circ](https://tex.z-dn.net/?f=%20%5Cangle%20DAC%20%3D%20180%5E%5Ccirc%20-%2097%5E%5Ccirc%20)
![\angle DAC = 83^\circ](https://tex.z-dn.net/?f=%20%5Cangle%20DAC%20%3D%2083%5E%5Ccirc%20)
Measure of ![\angle CAD = 83^\circ](https://tex.z-dn.net/?f=%5Cangle%20CAD%20%3D%2083%5E%5Ccirc%20)