That's a square.
Right angled triangle
That of course will depend on their sizes but alternate angles are equal in sizes
It will have 2 opposite equal angles of 33 degrees and 2 opposite equal angles of 147 degrees
if the rest of the angles don't equal 90 degrees.. you can have one angle that is 90 degrees and the rest of them be different sizes..
22 1/2 degrees
An obtuse triangle has 1 angle greater than 90 degrees and 2 angles less than 90 degrees but of different sizes
An isosceles trapezoid has 2 pairs of equal angles of different sizes and they add up to 360 degrees
An isosceles trapezoid has two equal obtuse angles and two equal acute angles that all add up to 360 degrees
It is 180-98 = 82 and 82/2 = 41 So the 3 angles are: 98 degrees, 41 degrees and 41 degrees because 2 angles in an isosceles triangle are equal in size.
Opposite angle are equal and adjacent angles are supplementary. Thus the other 3 angles are 91o, 89o & 91o.
Regular octagons have equal sides.
girl's shoe sizes are different from women's shoe sizes