All About Linear Pairs Find the measure of y..

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Presentation transcript:

All About Linear Pairs Find the measure of y.

Warm Up: Find the measure of the angles. 4.3 Rotations Warm Up: Find the measure of the angles. 1) BOE = 20 2) BOD = 50 3) BOA = 180 4) AOC = 60 5) AOE = 160 6) COD = 70 7) EOC = 100 8) DOE = 30

4.3 Rotations Students will need a protractor. If direction isn't mentioned then all rotations are counter clockwise. Constructing a Rotation – Draw a 60 rotation of triangle ABC about point P.

4.3 Rotations Graph triangle ABC with A(3, 1) , B(3, 4), and C(1, 1). Then rotate it 180 degrees about the origin.

4.3 Rotations Learning Check: Graph triangle DEF with D(-3, -1) , E(-1, 2), and F(4, -2). Then rotate it 270 degrees about the origin.

4.3 Rotations Recall a Composition Transformation is a combination of 2 or more transformations. Let line segment XY have endpoints X(-3, 1) and Y(4, -5). Perform the following composition transformation. Reflection about the line y = x. Rotate 180 degrees about the origin.

4.3 Rotations Recall a Composition Transformation is a combination of 2 or more transformations. Let line segment XY have endpoints X(-3, 1) and Y(4, -5). Perform the following composition transformation. Reflection about the line y = x. Rotate 180 degrees about the origin.