maths gcse helppp edexcel pls omg

for maths 2 edexcel on how to prove it is a trapezium question, how many marks was it.

I used 1 pair of parallel sides and interior angles in parallel lines rule
I also wrote abt how it is a quadrilateral so internal angles add to 360 degrees

Is this sufficient for full marks? I didn't explain how corresponding angles don't add up to 180 degrees so it isn't a parallelogram. Could I still get full marks?

Reply 1

Winged Patgronus

I know for sure the question was worth 4 marks.
My teacher said we were meant to add up all the angles and sum it to 360 degrees, and then solve for x. After doing so, you show that there are pairs of co-interior angles that sum up to 180 degrees, meaning that there are 2 parallel lines and the shape is therefore a trapezium. If you assumed that the interior angles sum up to 180 in the beginning I think you'd get 2-3 marks.