Question

in the given figure ABCD is a quadrilateral and ac is a diagonal prove that Triangle ABC =~ CDA is AD || CB​

Answer 1

consider triangle ABC AND CDA

AB=DC (SIDE)

ANGLE BAC = ANGLE ACD (ANGLE)

AC=AC (COMMON SIDE)

THEREFORE,

TRIANGLE ABC IS CONGRUENT TO CDA

USING S.A.S CONGRUENT RULE

SO, AD=CB

ADIICB

Answer 2

Answer:

the triangles are similar by AA test of similarity and AD IS PARALLEL TO CB BY ALTERNATE ANGLES TEST

Step-by-step explanation:

IN ABC AND CDA

BAC. =ACD =35 DEGREE

BAC=CAD. COMMON ANGLE

.. THEY ARE SIMILAR TRIANGLES

AD IS PARALLEL TO CB .......... ALTERNATE ANGLES

HOPE IT HELPS

I AM ALSO WEAAAAK IN GEOMETRY