In conclusion... Same shape, same size Same shape, different size

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Presentation transcript:

In conclusion... Same shape, same size Same shape, different size What makes two shapes congruent? What makes two shapes similar, but not congruent? Same shape, same size Same shape, different size All angles are equal All sides are equal All angles are equal Sides are proportionate

Triangles Let Review

Properties of all triangles Interior Angles Exterior Angles Always add to 180 degrees Always add to 360 degrees

Classifying Triangles - by sides Two Equal Sides (will also have two equal angles) All Equal Sides (will also have all angles equal = 60 degrees) No Equal Sides (also no equal angles) Isosceles Equilateral Scalene

Classifying Triangles - by angles One angle 90 degrees One angle greater than 90 All angles less than 90 Right Angle Obtuse Acute

Naming Triangles Each vertex is named using an uppercase letter. Eg. ∠A means angle A Each side is names using the lower-case letter that corresponds to its opposite angle. *Sometimes the sides are named like a line segment. Eg. side c could also be side AB

Naming Triangles A triangle is named using the letters of each angle, in alphabetical order Triangle ABC or △ABC

Other Angle Properties Opposite Angles Opposite angles equal each other Complementary Angles Complementary Angles add to 180 A & C D & B A & B, B & C, C & D, A & D

Other Angle Properties Parallel Lines F Patterns (Eg. d = h, c = g, e = a) Z Patterns (Eg. c = e, d = f) C Patterns (Eg. d + e = 180)

Can you solve all the puzzle?