4 to 6 MENTAL MATHFor items 1 to 6, given: AD 1 bisectot BC.CeI. Why is ABAC?2. Why is D the midpoint of BC3. Why are LADB and LADC right angles!4 Why is AABC isosceles5. Why are 28 and 2C congruent6 Why are As ABD and ACD congruent?

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Answered: MENTAL MATH For items 1 to 6, given: AD…

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

Chapter4: Quadrilaterals

Section4.CT: Test

Problem 9CT: In ABC, M is the midpoint of AB and N is the midpoint of AC. If MN=7.6 cm, find BC.

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MENTAL MATH For items 1 to 6, given: AD 1 bisectot BC. Ce I. Why is ABAC? 2. Why is D the midpoint of BC 3. Why are LADB and LADC right angles! 4 Why is AABC isosceles 5. Why are 28 and 2C congruent 6 Why are As ABD and ACD congruent?