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4.1 Classify the triangle by its angle measure. obtuse triangle right triangle equlangular triangle acute triangle 4.1 Classify the triangle by its angle measure. obtuse triangle right triangle equlangular triangle acute triangle 86o 64o 4.1 Classify the triangle by its side length. isosceles triangle scalene triangle equilateral triangle right triangle 4.1 Classify the triangle by its side length. equilateral triangle right triangle scalene triangle isosceles triangle Find the measure of ∡A 4.2 m∡A = B o 25o C 127o x A 4.1 Find the measure of ∡A m∡A = B 25o o x A C 4.1 Find the measure of ∡A m∡A = A o x 51o B C 4.4 Tell if and why the triangles are congruent. Not congruent, not enough info ∡A ≅ ∡C, Triangles are ≅ by SAS Postulate. BD ≅ BD, Triangles are ≅, by SSS Postulate. Triangles are ≅ by the ASA Postulate A B D C 4.4 Tell if and why the triangles are congruent. Not congruent, not enough info AB ≅ AC, Triangles are ≅ by SSS Postulate BD ≅ BD, Triangles are ≅, by SAS Postulate Triangles are ≅ by the SSA Postulate A B D C 4.4 Tell what value x must be in order for the two triangles to be congruent by SSS ∆≅ Thm. 6x - 4 B x = A C 4x + 7 D 4.4 Tell if and how the two triangles are congruent. C A Not congruent, not enough info AC ≅ED, Triangles are ≅ by SSS Postulate ∡ABC ≅EBD, Triangles are ≅ by SAS Postulate B D E 4.5 Identify the postulate or theorem that proves the two triangles are congruent. A not congruent, not enough info Triangles ≅ by AAA Postulate. Triangle ≅ by ASA Postulate Triangle ≅ by AAS Postulate ▼ B E ▼ D C Tell if (and why) the highlighted statement is true. Triangles ≅ by SSS, True by CPCTC Triangles ≅ by SSS, False ∡'s not congruent Triangles ≅ by SAS ,True by CPCTC Triangles are not ≅, False ∡'s not congruent ∡A ≅ ∡B A C B D |