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Anh-Anh
right angle
US
UK
noun
plural ~ angles
[count] :an angle formed by two lines that are perpendicular to each other :an angle that measures
A
square
has
four
right
angles
.
Hold
the
nail
at
a
right
angle
to
the
board
.
The
two
boards
are
joined
at
right
angles
to
each
other
.
* Các từ tương tự:
right-angled triangle
US