Aim: What is isometry and orientation? MB433/3/09Lomas

Do Now:

Perform ry-axis(D2(ΔABC))

A

B

C

HW: Read 590-593Do 593-595#1,6,8-141)

2)

HW Review: 3

Find R90 rx-axis(4,-2)

Aim: What is isometry and orientation? MB433/3/09Lomas

HW: Read 590-593Do 593-595#1,6,8-14

An isometry is a transformation where distance is preserved.

Which types of transformations are isometries?

Aim: What is isometry and orientation? MB433/3/09Lomas

HW: Read 590-593Do 593-595#1,6,8-14

Orientation means order

A

A A

AB B

B B

C C

C

C

These have different orientation

These have the same orientation

Aim: What is isometry and orientation? MB433/3/09Lomas

HW: Read 590-593Do 593-595#1,6,8-14

What transformations preserve orientation?

A direct isometry is one that preserves distance AND orientation

A opposite isometry is one that preserves distance but changes the orientation

Aim: What is isometry and orientation? MB433/3/09Lomas

HW: Read 590-593Do 593-595#1,6,8-14

Aim: What is isometry and orientation? MB433/3/09Lomas

HW: Read 590-593Do 593-595#1,6,8-14