Solution :
Given :
ABCD is a quadrilateral.
Angle ADC = 90 degree
Angle DCB = 120 degree
Now angle DAB = 70 degree (alternate angles)
We know that the interior angles of a quadrilateral is 360 degrees.
So,
∠ DAB + ∠ ABC + ∠ BCD + ∠ CDA = 360°
70° + ∠ ABC + 120° + 90 ° = 360°
∠ ABC = 360° - (70° + 120° + 90°)
∠ ABC = 360° - 280°
∠ ABC = 80°
Now ∠ x = 180° - ∠ ABC (Line AB extended is 180° )
= 180° - 80°
= 100°
Hence proved.
Theres not really any way to tell because the cost per widget is highest when making three, lowest when making 7, but then increases when making 12. If the cost didnt rise when making 12 and instead followed the trend of the more widgets you make, the cheaper it is per widget
Answer:
the answer is 2: one pair of sides is parallel and the other pair is congruent.
Step-by-step explanation:
The effective elements to include in the introductions are statement of the topic, a relevant anecdote and a surprising fact about the topic. Therefore the option 1st, 2nd and 6th options are correct.
<h3>What is Introduction? </h3>
Introduction is the starting line or the opening hook or portion that attracts the readers attention which carries the relevant background of the information.
It is the statement which represents the main point of the following argument or the paragraphs.
There are many elements that included in the introductory part some of them are as follows:-
- a statement of the topic
- a relevant anecdote or tale
- a surprising fact about the topic
Therefore the option 1st, 2nd and 6th options are correct.
Learn more about Introduction here:
brainly.com/question/3964580
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