Question

In the adjoining figure,angle ACD=30,and angle ABD=60. Is the triangle ABD an equilateral triangle?​

Answer 1

Answer:

No , because all the angles in an equilateral triangle are equal to 60degree

Answer 2

NO..

TRIANGLE ABD IS NOT AN EQUILATERAL TRIANGLE.

REASON:

SUM OF ALL ANGLES OF A TRIANGLE IS 180°. THAT IS ANGLE ACD + ANGLE ABD + ANGLE BAD = 180°.

IF ANGLE ACD = 30°

ANGLE ABD = 60°

THEN ANGLE BAD WILL BE :

ANGLE (ACD + ABD + BAD) = 180°

30° + 60° + ANGLE BAD = 180°

THEREFORE ANGLE BAD = 180° - 30° - 60°

ANGLE BAD = 90°

IN EQUILATERAL TRIANGLE ALL ANGLES ARE 60°.

BUT HERE THE ANGLES ARE 60°,30°,90°

THUS TRIANGLE ABD IS NOT AN EQUILATERAL TRIANGLE.

HOPE IT WILL HELP YOU. IF YES PLS PUT A THANK YOU.