այդքան

In a sentence

• Ես այդքան գոհ չէի նրանց աշխատանքից։

  I wasn't that satisfied with their work.

  Here 'այդքան' ('that') expresses a degree of satisfaction, specifically to a lesser extent.

• Ինչու ես այդքան ուրախ այսօրվա համար։

  Why are you so happy about today?

  Here 'այդքան' ('so') is used to emphasize the degree of happiness the person feels.

• Այդքան տեսարանից հետո հոգնեցի։

  I got tired after all that scenery.

  Here 'այդքան' ('all that') refers to the quantity of experiences observed.