Atriangle has exactly three sides. prove the conditional by proving the contrapositive. if a polygon has more than three sides, then it is not a triangle. contrapositive: if then since the contrapositive is the original statement must be

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

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step-by-step explanation:

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