-
smaller than a
straight angle (between 90° and 180°) is
called an
obtuse angle ("
obtuse"
meaning "blunt"). An
angle equal to 1/2 turn (180° or π radians)...
- In geometry, the orientation, attitude, bearing, direction, or
angular position of an
object – such as a line,
plane or
rigid body – is part of the description...
-
adjacent acute angles on its
longer base edge. An
obtuse trapezoid on the
other hand has one
acute and one
obtuse angle on each base. An
isosceles trapezoid...
-
develop an
obtusely angular ventral area and
venter that
disappears toward the
front of the
mature body chamber. The
suture has an
angular ventral saddle...
-
above and
below densely,
finely spirally striate. The
periphery is
obtusely angular. The base is
nearly flat. The
oblique aperture is
smooth within. The...
- fan shaped.
These panicles are
erect or
drooping slightly,
rachides obtusely angular;
glabrous or incon****uously scaberulous,
pedicels 2-5mm in length...
- co****ly lirate. The
sutures are subcanaliculate. The body
whorl is
obtusely angular at the periphery. Its
upper surface is
encircled by 4 co****, somewhat...
- convex,
encircled by numerous,
close fine striae. The
periphery is
obtusely angular. The base of the s**** is
slightly convex, and
concentrically finely...
- surface,
their interstices bearing spiral stripe. The body
whorl is
obtusely angular at the periphery,
slightly convex beneath, a
little descending anteriorly...
- and
larger lirae. The
granules are
reddish brown. The body
whorl is
obtusely angular. The base of the s**** is
concentrically grooved. The
umbilical region...
