Question

7. prove that the sum of the angles of quadrilateral is 360°.(Hint: join A and C and use the angle sum property of triangle for∆ABC and∆ADC.)
this is the question of subject maths chapter name Triangles and their properties of standard 7 ​

Answer 1

Answer:

THERE ARE 2 TRIANGLES. SUM OF ALL ANGLES OF TRIANGLE IS 180 DEGREE. SO 180*2=360DEGREE

Step-by-step explanation:

Answer 2

Step-by-step explanation:

quadrilateral is 360°.(Hint: join A and C and use the angle sum property of triangle for∆ABC and∆ADC.)

this is the question of subject maths chapter name Triangles