Modern Junior Mathematics, Book 3

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Page 220 - Two triangles are congruent if two angles and the included side of one are equal respectively to two angles and the included side of the other.
Page 217 - Two triangles are congruent if two sides and the included angle of one are equal respectively to two sides and the included angle of the other.
Page 229 - Two right triangles are equal if the hypotenuse and an acute angle of the one are equal respectively to the hypotenuse and an acute angle of the other.
Page 228 - A line drawn from the vertex of an isosceles triangle to the middle of the base, is perpendicular to, the base.
Page 216 - If two triangles have two sides and the included angle of one equal respectively to two sides and the included angle of the other, the triangles are equal.
Page 223 - In an isosceles triangle the angles opposite the equal sides are equal.
Page 219 - Two right triangles are equal if the two legs of one are equal respectively to the two legs of the other. Given : Rt. A ABC and DEF ; AC = DF; CB = FE. A n . To Prove : A ABC = A DEF.
Page 224 - Prove that the bisector of the vertex angle of an isosceles triangle bisects the base and is perpendicular to it.
Page 224 - The bisector of the vertex angle of an isosceles triangle is perpendicular to the base.
Page 137 - ... more cases of diphtheria and treat 10 of them successfully, he will have treated f of his cases successfully. But if he should have 32 more cases and succeed with 30 of them, he will have succeeded with | of his cases. How many cases has he had so far and how many has he treated successfully? 41. If 1 be added to the numerator of a certain fraction, the value of the fraction becomes f ; but if 1 be subtracted from its denominator, the value of the fraction becomes |. Find the fraction.

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