## Plane Geometry |

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### Common terms and phrases

AABC ABCD altitude Analysis and construction angle approximate base bisects called chord circle circumscribed coincide common complete Conclusion congruent construct definitely diagonals diameter difference distance divided Draw drawn equal equally distant equation equilateral triangle equivalent EXERCISES extended exterior angle extremities figure Find Find the area formed geometry give the proof given circle given point given segment hexagon hypotenuse Hypothesis Illustration inch inscribed intersect INVOLVING isosceles triangle joining length Let the pupil locus mean measure median method mid-point NOTE parallel parallelogram passes perimeter placed possible PROBLEM proof proportional prove quadrilateral radius ratio rectangle regular polygon respectively result right angle right triangle Show sides square straight line Suggestion symmetry tangent TEST THEOREM third trapezoid unit vertex vertices

### Popular passages

Page 298 - SQUARE MEASURE 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30| square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq.

Page 183 - The internal bisector of an angle of a triangle divides the opposite side internally in the ratio of the sides containing the angle, and likewise the external bisector externally.

Page 185 - If a perpendicular is drawn from the vertex of the right angle to the hypotenuse of a right triangle: 1st.

Page 243 - In a series of equal ratios, the sum of the antecedents is to the sum of the consequents as any antecedent is to its consequent.

Page 180 - If two chords intersect within a circle, the product of the segments of one is equal to the product of the segments of the other.

Page 298 - LENGTH 12 inches (in.) = 1 foot (ft.) 3 feet = 1 yard (yd.) 5| yards = 1 rod (rd.) 320 rods = 1 mile (mi.) 1 mile = 1,760 yd.

Page 190 - If two right triangles have an acute angle of one equal to an acute angle of the other, the right triangles are similar.

Page 103 - ... greater than the included angle of the second, then the third side of the first is greater than the third side of the second.

Page 184 - The bisector of an exterior angle of a triangle divides the opposite side externally into segments which are proportional to the other two sides. D "'"A

Page 186 - The sum of the squares of the legs of a right triangle is equal to the square of the hypotenuse: a2 + b2 = c2.