Question

।n trapezium ABCD, side AB || side DC , diagonals AC and BD inyersect in point O. if AB = 20, DC = 6 , OB = 15 then findOD​

Answer 1

Answer:

OD=4.5

Step-by-step explanation:

GIVEN:

AB=20, DC=6, OB=15, OD=?

Side AB//side DC

SOLUTION:

COD AND AOB

angle COD = AOB ...............(Vertically opposite angles)

Angle DOC= BAO .................(Alternate interiors angles)

By AA Similarity test

Triangle COD = AOB

OD/ OB= DC/AB

= OD/ 15= 6/20

= OD= 6*3/4

= OD= 9/2

= OD = 4.5

I hope it understand you

Answer 2

Handwritten note ....... hope it would help you...