Question

three straight lines are shown in the diagram work out the sizes of angles a,b and c give reasons for your answers P.s worth 100 points again

Answer 1

a = 40

b = 110

c = 30

Explanation:

a = 360 - 320

= 40

Reason: angles around a point sum up to 360

b = 180 - 70

= 110

Reason: angles on a straight line sum up to 180

c = 180 - (40 + 110)

= 30

Reason: angles in a triangle sum up to 180