Question

In the given figure, if ∠​A= 75° and CE ∥ AB. If ∠​ECD= 40°, find the other two angles of the △

ABC.​

Answer 1

Answer:

40,75,65

Step-by-step explanation:

given CE is parallel to AB.

so since angle, ABC  ,and angle ECD are corresponding angles...

they are equal.

So angle ABC is 40 i.e <B = 40 °

in a triangle sum of angles is 180°.

so <A + <B + <ACB = 180

i.e 75 + 40 + <ACB =180.

<ACB = 65°.

hence 40° ,75°,65° are all angles in triangle