किसी चतुर्भुज की विपरीत भुजाये तथा विकर्ण बराबर है। तब चतुर्भुज का प्रत्येक कोण है।

Options

A. `90^(@)`
B. `120^(@)`
C. `100^(@)`
D. `60^(@)`

Answer

A

Explanation

According to question,

AB=CD AB=CD
BC=AD AD=BC
AC=BD AC = BD
`angleDCB= 90^(@)`
Note: Only rectangle follows these condition,
`therefore` angles of the quadrilateral is salme as each angle of reactangle = `90^(@)`.