Adjacent angles are next to each other
yes all triangles have three angles the word meaning tri
None... All 4 angles are right angles (right angle means 90 degrees), meaning the angles are neither obtuse, nor acute.
When a line transverses parallel lines the alternate exterior angles of that line are equal
A semicircular instrument for measuring and constructing angles.
They are angles formed when two straight lines intersect: they are on opposite sides of the point of intersection.
It is one unit of measure of angles.
they are not rotated meaning that their angles are in the same place
Consecutive angles in a parallelogram will not be complementary. Complementary would mean the angles would add up to 90 degrees. Consecutive angles add up to 180 degrees, meaning they are supplementary.
Angles larger than a right angle and smaller than two right angles (between 90° and 180°) are called obtuse angles("obtuse" meaning "blunt").
Yes. It's actually the meaning of the word.
Having equal angles; as, an equiangular figure; a square is equiangular.
A figure or polygon having nine sides and nine angles.