Hi there! Sorry to bother you, but can someone help me out with this? For those who know the answer for this, please, can you help me? THANKSSS

Kindly explain your answers, i would rlly appreciate if you put an explanation for your answers

Please answer this correctly :'(

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1. Postulates.

Postulates are some logical statements. They don't need proof. They are considered to be universal truth and they build the base of the proof of different theorems and formulae.

2. 33 units

AD is the sum of AB, BC and CD. It will be more clear from the photo attached above.

step-by-step explanation:

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq