**TI83F* AppVariable file 03/27/09, 16:342 2GLPA1022nav AEC13267AEFC43F88E67E1C0E88B5B83GLPA10.9GLPA101   acute angle !Gacute angle:An angle with a measure greater than 0 and less than 90. acute triangle"!Facute triangle:A triangle in which each angle measures less than 90.  congruent#congruent:Having the same measure. conversefconverse:The statement formed by exchanging the hypothesis and conclusion of a conditional statement. Distance FormulaDistance Formula:The distance between two points, with coordinates (x1, y1) and (x2, y2), is given by d = ((x2 - x1)^2 + (y2 - y1)^2). equilateral triangle!aequilateral triangle:A triangle having all three sides congruent and all three angles congruent.  hypotenuse(!Bhypotenuse:The side opposite the right angle in a right triangle. irrational numbers irrational numbers:Numbers that cannot be expressed as fractions, terminating decimals, or repeating decimals. Examples: 3, , 5, e  isosceles triangle!Aisosceles triangle:A triangle with at least two congruent sides.  legs(!>legs:The sides of a right triangle that form the right angle.   line segmentH-!Vline segment:Part of a line containing two endpoints and all the points between them.   obtuse angle !Fobtuse angle:An angle that measures more than 90 but less than 180.  obtuse triangle !4obtuse triangle:A triangle having one obtuse angle. perfect squarepperfect square:A number whose square root is a rational number. Example: 25 is a perfect square since 25 = 5^2 Pythagorean Theorem/!Pythagorean Theorem:If a and b are the measures of the legs of a right triangle and c is the measure of the hypotenuse, thenc^2 = a^2 + b^2.  radical sign4radical sign:The  symbol, used to indicate a root.  real numbersJreal numbers:The set of rational numbers and irrational numbers together.  right angle!0right angle:An angle that measures exactly 90. right triangle*!2right triangle:A triangle having one right angle. scalene triangle0!5scalene triangle:A triangle with no congruent sides. solving a right trianglesolving a right triangle:Using the Pythagorean Theorem to find the length of the third side of right triangle, if the lengths of the other two sides are known.  square rootsquare root:One of the two equal factors of a number. If a^2 = b, then a is the square root of b. Example: 12 is a square root of 144 since 12^2 = 144. straight anglev!,straight angle:An angle that measures 180. triangle_%!'triangle:A polygon having three sides. vertex;!Tvertex:A vertex of a triangle is a point where two sides of the triangle intersect.8`p0P@ @@ @@ @@?8`  @@ @@ @ @@8`ZF4 T @@`    `@  p  @pA @( P ( @ ( ii)$8`@``@9`  ' @P@ P H@ @@  @!_ @ 8`@`@ @   @@@ @ @  @@@ @ @ @8`AD `J 1 SL ! UHiS& a `"% &1$P@0pBL@4@a !`   "10%  *)G@** 0 Q@008`$$ $ `8`8  @ @$,f4$I*ȥT$)&4 M"U`  `?8`d`  8@@ 0 0` @@` 0 0`  @@`8`@`@ @  @@@@ @ @ @@@@ @  @ @8`T @@`    ` p  @p8`@@ @"@E5d edT STTQc3S#@@BLB@@ @     @L@8`@@  @P3VIP VJeJ` 5JEI@3520dBLB@@ @     @L@8`8$8$8 < ?  8<8`@@@`@@@@`@@@F`JJE@`@@@`@@$&00(>(|@((@|0y