Hi everyone,

Today i had a Maths test of 3o marks in school today and i found it hard for me as im not that good in Quadrilaterals!so out here ive got a question for you all to answer and explain me so nicely for i want to know whats its answer as i got this one in the test!so heres it!

Find all the angles of a parallelogram one of whose angles is 55°.

so that was the question and you also along with writing the angles you also have to give the reasons for them like one reason is "in a parallelogram opposite angles are equal"!

so please explain me this nicely becoz u know why!

rosala Jul 7, 2014

#1**+10 **

Okay rosala,

Opposite angles in a parallelogram are equal so the opposite angle is 55 degrees

Now the angle sum of any quadrilateral (4sides) is 360 degrees so

55+55+x+x = 360 (the four angles add up to 360degrees and opposite angles are equal)

110+2x=360

2x=250

x=125

so the angles are 125, 125, 55, and 55 degrees.

Melody Jul 7, 2014

#1**+10 **

Best Answer

Okay rosala,

Opposite angles in a parallelogram are equal so the opposite angle is 55 degrees

Now the angle sum of any quadrilateral (4sides) is 360 degrees so

55+55+x+x = 360 (the four angles add up to 360degrees and opposite angles are equal)

110+2x=360

2x=250

x=125

so the angles are 125, 125, 55, and 55 degrees.

Melody Jul 7, 2014