The fruit is a double samara with two rounded, winged seeds, the wings 1.5 3 long, spread at an acute angle.
en.wikipedia.org The fins were also altered so that the upper and lower leading edges met at an acute angle.
en.wikipedia.org In some cases, pressure may rapidly build up in the eye, causing pain and redness (symptomatic, or so called acute angle closure).
en.wikipedia.org Leaves hairless, narrow, 1 to 1.6 cm long, 1 mm wide, wedged shape with an acute angle at the base of the leaf.
en.wikipedia.org With acute angle-closure glaucoma, the pupil is generally fixed in mid-position, oval, and responds sluggishly to light, if at all.
en.wikipedia.org