The quadrilateral with two parallel sides is called trapezoid. The sides that are parallel are called bases and the others are called lateral edges. The line segment passing through the midpoints of the side edges is called the middle base.
The trapezoid with equal side edges is called “isosceles trapezoid”.
In an isosceles trapezoid, the lengths separated by the heights from the corners are equal.
In an isosceles trapezoid, the diagonal lengths are equal.
A trapezoid with lower and upper bases perpendicular to one of its side edges is called “Perpendicular trapezoid”.
The area of the slope is equal to half the sum of the upper and lower bases times the height.
In a trapezoid, the area of the triangle obtained when the midpoint of one of the side edges is joined by the opposite two vertices is equal to half the area of the trapezoid.
After the YKS Geometry trapezoidal lecture, let’s reinforce the subject with solved tests.