2. QuadrilateralsNames A Math 8 Lecture 3. Quadrilaterals are polygons with four sidesQuadrilateralsThe sum of the measures of the angles of a quadrilateral is 360 degrees 4. TrapeziumTrapezoid(kite)Parallelogram The QuadrilateralsNamesRhombus SquareRectangle 5. Quadrilaterals2 pairs adjacent congruent sides1 pair parallel sides2 pairs parallel sidesTrapezoid Parallelogramnon-parallel sides are congruent4 congruent sides4 right anglesKite Isosceles TrapezoidRhombus RectangleSquare 6. The Properties of Quadrilaterals 7. TrapezoidTrapeziumSides1 pair of parallel sidesno pair of parallel sides2 pairs of parallel sides and opposite sides equal. ParallelogramSides Rhombus 2 pairs of parallel sides and all sides equal.2 pairs of parallel sides and all sides equal. Square2 pairs of parallel sides and opposite sides equal. Rectangle 8. TrapezoidKiteOne opposite pair of equal anglesOpposite angles are equal.ParallelogramAnglesAngles RhombusOpposite angles are equal.All angles are right angles (90o) SquareAll angles are right angles (90o)Rectangle 9. TrapezoidKiteDiagonals cross at right anglesDiago Diagonals nalsRhombusDiagonals bisectParallelogramDiagonals equalDiagonals bisectDiagonals bisect at right anglesRectangle Squareat right angles 10. TrapezoidKiteAll ThreeSides, angles and diagonalsRhombusParallelogramRectangle Square 11. Isosceles TrapezoidGeneral TrapezoidOne pair of equal sides and two pairs of equal angles.Sum of the angles is 360 degreesRight-angled TrapezoidTrape Angles of zium Trapezoids 1Right-angled Trapezoid 12. Isosceles TrapezoidGeneral TrapezoidDiagonals of equal lengthRight-angled TrapezoidTrape Diagonals zium 2Right-angled Trapezoid 13. General TrapezoidThe MEDIAN of a trapezoid is the line segment that joins the midpoints of the two non-parallel sides of the trapezoid.Median of a TrapezoidThe length of the MEDIAN a trapezoid is the line segment that joins the midpoints of the two non-parallel sides of the trapezoid. 14. Thank you!
