TRIANGLE’s INTERIOR ANGLE SUM 1. a. First, Create a random triangle on a piece of patty papers. b. Using your pencil, write a number inside each interior angle a label. c. Next, cut out the triangle. d. Finally, tear off or cut each of the angles from the triangle e. Using tape, carefully put all 3 angles next to one another so that Referring to Figure 6.3, suppose that Dabc and Da'b'c' are two triangles such that Ðbac @ Ðb'a'c', ab @ a'b' and ac @a'c'. Translate Da'b'c' along aa' so that a' coincides with a. Since the sides ac and a'c' are congruent we can now rotate Da'b'c' (about a=a') until c' coincides with C.
61. Given the diagram below, answer the following questions: a) Find the scale factor of the dilation already drawn. b) Using the triangle A’’’ create a third triangle dilated by 1.5cm centered at point O. c) Find the scale factor, in centimeters, from triangle A to triangle A” ””. 62. Give a reason to support your answer. To decide whether the two triangles are similar, calculate the missing angles. Remember angles in a triangle add up to 180°. Angle yxz = \(180 - 85 - 40 = 55 ...
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