x equals puzzle

Question

I'm looking for a 2-word phrase, (6) (5). Try to figure out which phrase it is given the image below.

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Answer 1

The answer here is:

TENNIS COURT

The first thing to notice is that...

...the letters and shapes can be overlaid, equating each point to a letter:

Now, if we try to...

...position each of the small shapes so that these points line up (i.e. so that all points labelled 'A' overlay each other, then all the points labelled 'B', etc.), we form an image that looks something like this (approximated in MS Excel):

What is this? Well...

Let's shade everything green and make the lines white. This is now recognisably the markings of a TENNIS COURT. In fact, let's make the centre line grey, since it, in fact, represents the net (hence why I suspect the vertical line at the top of the original image was included as a 'piece' in its own right):

As for the title...

In Roman numerals, 'x equals' can be read as 'ten is', i.e. Tennis!