Parallelogram ABCD is shown.
CD=DE
Work out the size of angle x.
2 answers:
Step-by-step explanation:
Angles in a parallelogram are supplementary
Answer: x=19
Step-by-step explanation:
As CD=DE
ECD is also 38
Because it is an isosceles triangle which has 2 equal sides and angles.
As interior angles add up to 180
38+38-180=104
So CDE=104
Angle on a straight line add up to 180
180-38
AEC= 142
As oppossite angles in a parallelogram are equal
CDE=CBA
CBA=104
Finding x
Say BCA=x
Lets see CBAC
104+3x+x=180
104+4x=180
4x=76
x=19
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