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Proving Theorems about Triangles: Mastery Test
S
D
Given: AABC
Prove: A midsegment of AABC is parallel to a side of AABC.
Reason
Statement
1. Define the vertices of AABC to have unique
points Axt. Y1), B(x2, y2), and ClX3. Y3).
given
Dhe the midsint of SR and he the

Adriver from the university of florida women’s swimming and diving team is competing in the in ncaa zone b championships

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.

Acampus club held a bake sale as a fund raiser, selling coffee, muffins, and bacon and eggs sandwiches. the club members charged $1 for a cup of coffee, 3$ for a muffin , and $4 for a back. and egg sandwich. they sold a total of 55 items , easing $119. of the club members sold 5 more muffins than cups of coffee, how many bacon and egg sandwiches he’s did they sell