Question

please help me in this question.​ class 7th​

Answer 1

Step-by-step explanation:

Since, the sum of the measures of interior angles of a quadrilateral is 360∘

Also,115∘+70∘+60∘=245∘

∴∠ABC=360∘−245∘=115∘

Now, x=ext∠BCD

=180∘−115∘=65∘

y=180∘−70∘=110∘

z=180∘−60∘=120∘

w=180∘−115∘=65∘

∴x+y+z+w=65∘+110∘+120∘+65∘=360∘

Answer 2

Also,1150+70°+60°=245°

..ZABC=360°-2450-115⁰

Now, x=ext/BCD

=180°-1150-65⁰

y=180 -70 =110^

z=180 -60 =120

w=180 -115 =65^

: x+y+z+w=65 +110 +120 +65 =360