Question

in a quadrilateral ABCD is A equal to 90 degree B is equal to 60 degree ,find D​

Answer 1

Answer:

Angle D= 90 degrees

Step-by-step explanation:

A+B+C+D=360

A+C=180

B+D=180 SINCE ABCD IS A QUADRILATERAL

G.T. C-D=60 & A-C-D=10 & B=90

ANGLE D=180-ANGLE B 180-90=90

ALSO GIVEN, ANGLE C- ANGLE D=60

                  ANGLE C =60 + ANGLE D =60+90=150

SINCE ABCD IS A QUADRILATERAL, ANGLE A+ ANGLE C=180

                                        SO ANGLE A =180-ANGLE C=180-150=30

ANGLE A=30 DEGREES

ANGLE C=150 DEGREES

ANGLE D=90 DEGREES