The angle bisector theorem is commonly used when the angle bisectors and side lengths are known. It can be used in a calculation or in a proof. An immediate consequence of the theorem is that the angle bisector of the vertex angle of an isosceles triangle will also bisect the opposite side.
Answer: 1, 2, 5 is the correct answer
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Explanation:
Regular water temperature has a high surface tension. Without surface tension, small particles like dust could sink into the water and kill marine life that live below. This could cause whole ecosystems to be destroyed. I hope this helps!
4 chambers in the heart and mammals and birds have the same number of chambers
