A trapezoid is a 4-sided shape, therefore the sum of the angles adds to 360 degrees.
if you continue the lines until they touch you have a triangle, whose angles sum to 180 degrees.
using the law of sines, the ratio of length of a side to the sine of the angle opposite of a triangle is consistent for all three sides.
using the law of cosines you are able to find the angle between any two lengths of a triangle.
use these two laws to find the bottom two angles which form the base of the triangle.
the remaining two angles can be found by finding the angles in the triangle that sits on top of the trapezoid, and determining their compliment angle
180 - angle = compliment angle
Trapezoid
There is no such thing as a regular trapezoid. REGULAR implies that all sides and all angles are equal. If that is the case, with a quadrilateral each angle would be 90 degrees, none would be 50.
It fits the description of a trapezoid
"72.00"
it doesn't normally but it can and still be a trapezoid
Trapezoid
There is no such thing as a regular trapezoid. REGULAR implies that all sides and all angles are equal. If that is the case, with a quadrilateral each angle would be 90 degrees, none would be 50.
It fits the description of a trapezoid
A trapezoid should add up to 360 degrees. add the angles that are shown and subtract by 360. the missing angle should be found.
"72.00"
360 degrees
A trapezoid can have a maximum of 2 obtuse angles. An obtuse angle is one that measures greater than 90 degrees. In a trapezoid, two of the angles are acute angles (less than 90 degrees) and the other two angles can be either acute or obtuse.
If three central angles measures 65, 87, and 112, find the measure of the fourth central angle.
The TWO (not one) missing angles are 102 and 70
The "Far Arc Near Arc theorem" is used in finding the angle measures of a secant.
a right trapezoid
The area of a trapezoid is equal to the height, multiplied by the average of the two widths.