Do Now – Geometry Take out your Homework to be checked POD – Find the missing interior angles of each triangle. 32° 62° 148°

Homework Solutions 1.Sometimes 2.Sometimes 3.Always 4.Always 5.Never 6.48° 7.40°,45°; 50° 8.79°; 51°, 39° 9.70° ° ° 12. <A = 33° <B = 66 ° <C = 81 ° acute triangle 13.<R = 20 ° <S = 140 ° <T =20 ° obtuse triangle 14.<W = 75 ° <Y = 15 ° <Z = 90 ° right triangle ° 16.<Q = 120° <P = 24° °

4.3 – Congruent Triangles If two triangles are _________________ if and only if their ____________________ parts are congruent. When two figures have exactly the same ___________________ and __________________, they are said to be congruent. For two congruent ____________________ there are three pairs of _____________________ (matching) sides and three pairs of _______________________ angles. To write a correspondence statement about congruent triangles, you should __________________ corresponding angles in the same ______________. Remember that congruent parts are marked by _________________ markings.

4.3 – Congruent Triangles The statement that two triangles are congruent can be abbreviated as _________________. This means that Corresponding _____Parts_____ of __Congruent_______ Triangles are ___Congruent__________.

Example #2: Use the picture to complete the correspondences if Examples AC B D F E Directions: Write a congruence statement. Example #1) TS R A BC AB = EF BC = FD CA = ED