If line segment AB is perpendicular to CD then ∠DCA = ? (in degrees)
When a line segment is perpendicular to another line segment then angle between them is 90∘.
If ∠ACD = 90∘, then line segment AB is __to line segment CD.
If ∠ACD= 90o. Then line segment AB is __ to line segment CD.
If AE = BE, then CD is the perpendicular bisector of line segment AB.