Question

Given: Quadrilateral ABCDwith m∠A=(10x)°, m∠B=(8x)°, m∠C=(10x)°, and m∠D=(8x)°. Prove: x = 10

Answer 1

Answer:

Step-by-step explanation:

A + B + C + D = 360  (sum of all angles of quadrilateral)

10x + 8x + 10x + 8x = 360

36x = 360

x = 360/36 = 10

hence, proved

Answer 2

Answer:

Yes x= 10°

Step-by-step explanation:

The sum of all interior angle=360°

therefore,

acq,

10x°+8x°+10x°+8x°=360° (angle sum property)

or,. 36x°=360°

or,. x°=10° ans.

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