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The types of triangle are isosceles, equilateral, scalene, and right-angled. Irregular polygons have sides of different lengths and angles. Regular polygons. There are names for other shapes...
- Interior Angle
- Exterior Angle
- Central Angle
- Apothem
- Radius
Interior angles are the angles that are formed inside the polygon at its corners when the line segments join in an end to end fashion. Here, we will discuss about how to find the measure of the sum of the interior angles in any n-sided regular polygon and also how to find the individual angles. Sum of Interior Angles It is the total measure of all ...
Exterior angle is the angle formed by any side of the polygon and the extension of its adjacent side. How to Find the Exterior Angle of a Regular Polygon For a regular polygon, all the exterior angles are equal, and they add up to 360°. Thus dividing 360° by the number of sides will give us the measure of each exterior angle of the regular polygon....
The central angle of a polygon is the angle formed at the center of the polygon by any two adjacent vertices. The number of central angles in a polygon is equal to the number of sides of the polygon. Since a regular polygon has all equal sides, the central angles are also equal. How to Find the Central Angle of a Regular Polygon Since all the centr...
The apothem of a polygon is the line segment joining the center of the polygon to the midpoint of one of its sides. How to Find the Apothem of a Regular Polygon The apothem of a regular polygon can be determined when both the area and perimeter of the polygon are known. To determine the apothem, we will use the formula for finding the area of the p...
The radius of a polygon is the distance from the center of the polygon to any vertex. The formula to determine the radius is given below:
The quadrilaterals with exactly one line of symmetry are a kite and an isosceles trapezium. The line of symmetry cuts the shape into two mirrored halves.
Aug 3, 2023 · An isosceles trapezoid is a two-dimensional closed figure with one pair of congruent non-parallel sides (legs) and two pairs of congruent base angles. In other words, an isosceles trapezoid is a trapezoid with congruent legs. Therefore, an isosceles trapezoid has a pair of parallel but unequal opposite sides (bases) and a pair of non-parallel ...
Isosceles trapezoid is a trapezoid in which the top and bottom sides are parallel, while the remaining two non-parallel sides have the same length. We know that a trapezoid is a quadrilateral with two parallel sides and two non-parallel sides.
- In an isosceles trapezoid, non-parallel sides are equal, base angles are equal, diagonals are congruent, and opposite angles are supplementary.
- Isosceles means “equal legs.” In an isosceles trapezoid, the non-parallel sides (or legs) are of equal length. Thus, it is called an isosceles trap...
- The number of sides in an isosceles trapezoid is four. While the two bases (opposite sides) are parallel to one another, the other two sides are eq...
- A right trapezoid is a trapezoid that has two adjacent right angles.
- A trapezoid in which all the four sides are of different lengths is called a scalene trapezoid.
In Euclidean geometry, an isosceles trapezoid (isosceles trapezium in British English) is a convex quadrilateral with a line of symmetry bisecting one pair of opposite sides. It is a special case of a trapezoid.
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A trapezoid (called a trapezium in the UK) has a pair of opposite sides parallel. And a trapezium (called a trapezoid in the UK) is a quadrilateral with NO parallel sides:
