Answer:
(a) 46°
(b) 86°
Step-by-step explanation:
When the secants cross externally (figure a), the angle where they cross is half the difference of the subtended arcs.
When they cross internally (figure b), the angle is half the sum of the subtended arcs.
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<h3>(a)</h3>
Half the difference of arcs VW and VX is ...
∠VYW = 1/2(160° -68°) = 46°
m∠VYW = 46°
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<h3>(b)</h3>
Half the sum of arcs AB and CD is ...
∠CED = 1/2(arc AB +arc CD)
2×∠CED = arc AB +arc CD . . . . . multiply by 2
2×∠CED -arc AB = arc CD . . . . . subtract arc AB
arc CD = 2×85° -84° = 86°
m arc CD = 86°
I would say C because D has multiplication instead of adding in the parenthesis and I don't think that is the "basic" way
Answer:
412.
Step-by-step explanation:
412 =
1) less than 500
2) two even digits
3) quadrilaterals have 4 sides
4) 4 + 1 = 5 and there are 5 nickels in a quarter
5) the digital root of 412 is 7