Parallel lines do not meet. Therefore they do not form any angles! So the angles (that do not exist) cannot add up to anything.
A kite has no parallel sides but it is a 4 sided quadrilateral whose 4 interior angles add up to 360 degrees
Only if they add up to 180 degrees which would be the case if the parallel lines are cut through by a perpendicular line.
A co-exterior angle is almost the same thing as co-interior:Two angles on the same side of the transversal (in a figure where two parallel lines are intersected by a transversal).They are supplementary angles (add up to 180º).They are exterior angles meaning they are outsideof the two parallel lines (opposite of interior angles which are inside the two parallel lines).
When a transversal line cuts through two parallel lines supplementary angles are created that add up to 180 degrees
Parallel lines do not meet. Therefore they do not form any angles! So the angles (that do not exist) cannot add up to anything.
The internal angles add up to 360 degrees. If the trapezium has its base parallel to the top then the internal angles on the left of the parallel lines add to 180 degrees, the angles on the right add to 180 degrees.
A kite has no parallel sides but it is a 4 sided quadrilateral whose 4 interior angles add up to 360 degrees
Only if they add up to 180 degrees which would be the case if the parallel lines are cut through by a perpendicular line.
Allied angles are found on the transversal line that cuts through parallel lines and the 2 angles add up to 180 degrees
A co-exterior angle is almost the same thing as co-interior:Two angles on the same side of the transversal (in a figure where two parallel lines are intersected by a transversal).They are supplementary angles (add up to 180º).They are exterior angles meaning they are outsideof the two parallel lines (opposite of interior angles which are inside the two parallel lines).
all the lines on a triangle are equal and the opposite sides are parallel
Two parallel lines bisected by a straight line can produce three angles. Angles on the one side or 'inside' are corresponding. They can also be co-interior, in that they add up to 180-degrees. Opposite side one are called alternate angles.
Allied angles are found on transversal line that cuts through parallel lines and they add up to 180 degrees
When a transversal line cuts through two parallel lines supplementary angles are created that add up to 180 degrees
Depending upon the base, it will either have no parallel sides or up to (number of sides ÷ 2) sets of 2 parallel lines. The number of angles depends upon the base and is 3 × (base + 1).
To prove that a quadrilateral is a right trapezoid, you need to show that it has one pair of parallel sides and one pair of right angles. This can be done by using the properties of parallel lines and perpendicular lines.