Pre-Calculus Homework Solutions 95

Pre-Calculus Homework Solutions 95 - 3. AB 2x 2(3.5) or 7...

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3. AB 5 2 x 5 2(3.5) or 7 BC 5 4 x 2 7 5 4(3.5) 2 7 or 7 AC 5 x 1 3.5 5 3.5 1 3.5 or 7 4. m / 1 1 50 1 70 5 ¬ 180 m / 1 1 120 5 ¬ 180 m / 1 5 ¬ 60 m / 2 5 m / 1 1 50 5 60 1 50 or 110 m / 3 1 m / 2 1 21 5 ¬ 180 m / 3 1 110 1 21 5 ¬ 180 m / 3 5 ¬ 49 5. / M > / J , / N > / K , / P > / L ; M w N w > J w K w , N w P w > K w L w , M w P w > J w L w Page 199 Reading Mathematics 1. Sample answer: If side lengths are given, determine the number of congruent sides and name the triangle. Some isosceles triangles are equilateral triangles. 2. n ABC is obtuse because m / C . 90. 3. equiangular or equilateral Proving Congruence—SSS, SAS Pages 203–204 Check for Understanding 1. Sample answer: In n QRS , / R is the included angle of the sides Q w R w and R w S w . 2. Jonathan; the measure of / DEF is needed to use SAS. 3. EG 5 ¬ Ï [ 2 2 2 w ( 2 4)] w 2 1 [ 2 w 3 2 ( 2 w 3)] 2 w 5 ¬ Ï 4 1 0 w or 2 MP 5 ¬ Ï (2 2 4 w ) 2 1 [ 2 w 3 2 ( 2 w 3)] 2 w 5 ¬ Ï 4 1 0 w or 2 FG 5 ¬ Ï [ 2 2 2 w ( 2 2)] w 2 1 ( 2 w 3 2 1 w ) 2 w 5 ¬ Ï 0 1 16 w or 4 NP 5 ¬ Ï (2 2 2 w ) 2 1 ( 2 w 3 2 1 w ) 2 w 5 ¬ Ï 0 1 16 w or 4 EF 5 ¬ Ï [ 2 2 2 w ( 2 4)] w 2 1 [1 w 2 ( 2 3 w )] 2 w 5
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