Dandelion
by DeniseBernadette

Comment:
The colours are wonderful however a lower horizon balancing the bright yellow of the dandelion with the sky may work even better. (lower vantage point, shooting more towards the sky keeping just a small strip of green at the bottom for balance - just a suggestion)

On The High Steel
by alanbataar

Comment:
Once could totally miss the triangles in this shot since the framing leads the viewer to the horizon. If the horizon was placed inside one of the triangles then the triangle becomes a key part of the composition.

Triangular make-up
by TedvandenBergh

Comment:
The markings on the bird's face I believe is what you're referring to in your title however this is not a key element in the image. The triangle connection here is the framing of the bird (IMO). The two branches and the leaves across the top, though having objects poking into a composition from the edges usually detracts as they take the viewer out of an image.

Fill flash probably wasn't an option however more light and/or contrast is required to make the bird stand out better. Also, the tail is cut off so a not so tight crop would probably work better.

Three Orange Ladies
by dartompkins

Comment:
Nice idea to try for the not so literal approach to the challenge. The colour of the flowers are nice however the lighting is very flat. Fill flash may have helped. 5

Man Intersects Nature
by JunieMoon

Comment:
Yes, if I look hard enough I can find at least one triangle in the image however the main subject or composition does not say triangle to me.

edit: the composition is not working and I don't know what to suggest, maybe a wider angled shot to give more context.

Reflections
by sofapez

Comment:
I see two different compositions in this image. One using the symmetry of the railing and its reflection and the other with the railing, tree and bench.

For the latter, cropping most of the reflection and not cropping as much on top would make a very tranquil image. To exploit the symmetry a vertical composition might work better and I don't think the tree and bench are needed.

In either case, more contrast would probably increase the impact of the image. 6

Tree-angle
by ajschel

Comment:
The line of trees draws the viewer into the image nicely. However the overexposed areas are very distracting along with the lack of detail in the trees in the background.

Tropical Triangle
by scuds

Comment:
Yes they form a triangle however the overall image is not very compelling. It seems a little under exposed and a little too central.

Cityscape
by jjbeguin

Comment:
I like this idea however the overall image is a little too dark. 5

TriKnotTwo
by SMW409

Comment:
Great texture. Maybe a little too central however good take on the challenge. 6