Maths-
General
Easy
Question
In the given figure, is parallel to CD, then x =
- 45°
- 55°
- 65°
- 75°
Hint:
In this question, we have to find the value of x using the figure given. For that first we will extended of the parallel line such that they intersect with a common transversal. Later using some common theorems like angle properties of parallel lines or of triangle.
The correct answer is: 65°
Extended CD to G so that it intersect EB at F
Now, GD II AB and EB is transversal
So, EFG = EBA =140 [corresponding angles]
Also, As GD is a straight line.
ECG + ECD = 180 [sum of angles in a straight line is 180 ]
ECG + 105 = 180
ECG = 75
In ECF,
FEC + ECF = EFG [exterior angle is equal to sum sum of interior opposite angles ]
x + 75 = 140
x = 65
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