If there is a quadrilateral ABCD and ABllCD then will all the alternate interior and angles will be equal or not. Please answer my doubt. Share with your friends Share 0 Shruti Tyagi answered this Dear Student, From the given figure ∠ABD=∠BDC∠ACD=∠CABare the only angles which are equal as they are alternate interior angles. Regards, 2 View Full Answer Rithika Bhat answered this Yes all alternate interior angles will be equal 1