A concave polygon has at least one interior angle greater than 180 degrees. A convex polygon has none of those.
if you are talking about regular polygons, then nothing has an obtuse angle. otherwise, pretty much any shape can have an obtuse angle
The interior angle and the exterior angle are supplementary. That's why you learned about supplementary angles ... or at least they were presented in class ... before polygons.
they both have at least one pair of parallel sides and they both are not regular polygons. Parallel lines are two lines that are across from each other and do not cross like a = sign
Yes, an isosceles trapezoid can have at least one right angle. In such a trapezoid, the non-parallel sides are equal in length, and if one of the angles between a base and a non-parallel side is a right angle, the trapezoid will still maintain its isosceles properties. This configuration results in a trapezoid that is both isosceles and contains a right angle.
You cannot "solve the kinds of polygons". There are essentially three types of polygons: Regular polygons in which each angle is the same and each side is the same. Irregular convex polygons in which at least one angle or one side are different but there are no reflex angles. Concave polygons in which there is at least one reflex angle. Convex and concave are usually defined in terms of whether or not the enclosed space is closed, but the above definitions may be simpler to grasp.
Because if you have fewer than three lines they are either parallel, collinear or they form an angle. None of these are polygons.
A concave polygon has at least one interior angle greater than 180 degrees. A convex polygon has none of those.
No. Some do, but some don't.
if you are talking about regular polygons, then nothing has an obtuse angle. otherwise, pretty much any shape can have an obtuse angle
The interior angle and the exterior angle are supplementary. That's why you learned about supplementary angles ... or at least they were presented in class ... before polygons.
There is no specific name, but "right-angled polygon" will suffice.
Here are three shapes that have two pairs of parallel lines: square parallelogram rectangle There are many polygons with at least two pairs of parallel lines. hexagon (has 3 pairs of parallel lines) octagon (has 4 pairs) decagon (has 5 pairs)
A right triangle or a rectangle are polygons that have at least one right angle. There are other quadrilaterals and many irregular polygons that could have at lease one right angle, too. Many of them. Note that a polygon is any planar figure constructed of a finite number of line segments to make a closed figure. By that definition, which is a correct one, the triangle and rectangle are polygons. And a quadrilateral (of which the rectangle is special case) can be constructed with just one right angle, though it will be a bit quirky looking. Once we start adding sides to make different polygons, the game is afoot because so many possibilities exist.
The answer is a trapezoid.
a trapezoid
they both have at least one pair of parallel sides and they both are not regular polygons. Parallel lines are two lines that are across from each other and do not cross like a = sign