Question

.At what height does the space shuttle stand on its launch pad when it's ready for the lift-off ?Required to answer. Single choice.



42m

50m

56m

60m


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Answer 1

Explanation:

Proof: chord AB ≅ chord CD [Given] ∴ arc AB ≅ arc CD [Corresponding arcs of congruents chords of a circle are congruent] ∴ m(arc AB) = m(arc CD) ∴ m(arc AC) + m(arc BC) = m(arc BC) + m(arc BD) [Arc addition property] ∴ m(arc AC) = m(arc BD) ∴ arc AC ≅ arc BD