Question

2
ABC is an isosceles triangle with AB =
AC and BD and CE are its two medians.
Show that BD = CE.
OR
The angles of quadrilateral are in the
ratio 3:5:9:13. Find all the angles of
the quadrilateral.​

Answer 1

Answer:

or one

a=3x

b=5x

c=9x

d=13x

sum of all angle of quadrilateral = 360

3x. + 5x. + 9x. + 13x. = 360

30x. = 360

x. = 360÷30

x. = 12

a) 3x = 3 × 12 =36

b)5x. = 5 ×12. = 60

c) 9x = 9 × 12 = 108

d) 13x = 13 × 12 = 156

a+b+c+d= 360

36+60+108+156 =360