No
Chat with our AI personalities
Isosceles trapezoids have 2 (occasionally 3) equal sides and have 2 pairs of equal angles, but that's not case if they're not isosceles.
It doesn't have to, but it can. A trapezoid is any shape in which there is a pair of parallel sides. This means that a square can be classified as a trapezoid. But notice that a four-sided shape can never have ONLY three 90° angles. The sum of angles of a four-sided shape is 360--this means that if you have three 90° angles, then the remaining angle must be 360-3(90) which is 90°, giving you four right angles. * * * * * No you cannot. As indicated in the second paragraph of the above answer, three right angles implies that all four angles are right angles and that makes the figure a rectangle (or a square).
A pentagon with 3 right angles is considered to be an irregular pentagon because not all angles and all sides are equal.
A hexagon can be broken into any number, k (≥3) of trapezoids, and these will have 4k angles.
If a diamond does not necessarily have to have right angles in it, but if it does then all four corners have to be right angles. Think of a diamond as a turned square or rhombus.