Question

If ABCD is a parallelogram find the value of unknow size​

Answer 1

Step-by-step explanation:

Hey, there!!

As it is a parallelogram, remember basic properties of parallelogram,

• Their opposite sides are parallel and equal to eachother.
• Their opposite angles are equal.
• They have properties of parallel lines too.

Now, lets solve your question.

b = (7×10)°

Therefore, b= 70°.

now, (3x+10°)+b=180° { co- interior angle of a triangle sum is 180°}.

or, 3x= 180°-80°

or, x= 100°/3

Therefore, x= 33° { rounding off we get 33}.

w+ b =180°

w+70°=180° { coointerior angles are equal}.

Therefore, w =110°

Hope it helps....