Question

30. AC and BD are equal perpendiculars to line segment AB. Prove that ABOC - AAOD.​

Answer 1

$From \: \: figure,</p><p> \\ \\ </p><p></p><p>In △OAD  \: and \:  △OBC</p><p></p><p> \\ \\ </p><p>∠B=∠A = 90 \\ \\ </p><p>And, \\ \\ </p><p></p><p>∠D=∠C \\ </p><p> \\ </p><p>And, \\ </p><p> \\ </p><p>AD=BC \\ \\ </p><p></p><p>So \: , by \\ \\ \: ASA \:  congruence \: criterion \: rule, \\ \\ </p><p></p><p></p><p>△OAD  \: \: is \: \: \\ \\ congruent \: \: to  \\ \\ △OBC</p><p> \\ \\ \\ </p><p>Therefore, \\ \\ </p><p></p><p></p><p>OA=OB \\ \\ </p><p></p><p></p><p>Hence,</p><p></p><p> CD bisects AB</p><p></p><p></p><p>$

Answer 2

Answer:

As the molecules in a liquid collide, some achieve higher energies, allowing them to escape. This process lowers the energy of the remaining molecules and is the source of cooling in evaporating liquids.As the molecules in a liquid collide, some achieve higher energies, allowing them to escape. This process lowers the energy of the remaining molecules and is the source of cooling in evaporating liquids.As the molecules in a liquid collide, some achieve higher energies, allowing them to escape. This process lowers the energy of the remaining molecules and is the source of cooling in evaporating liquids.As the molecules in a liquid collide, some achieve higher energies, allowing them to escape. This process lowers the energy of the remaining molecules and is the source of cooling in evaporating liquids.