Answer please?

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May 7, 2013Day 78 of 9090-78 =

Kwame wants to find the shortest distance between two distinct points, point A and point B. He’s heard that the shortest distance between two points is a straight line segment. According to Euclid’s first postulate, can Kwame draw a straight line segment between point A and point B?

  A. No B. Yes C. It depends on the coordinates of point A

and point B D. It depends on the distance between point A

and point B

Warm-up

According to Euclid’s fourth postulate, which type of angles are always congruent?

acute anglesright anglesobtuse anglesstraight angles

Warm-up

Ripley’s spelling grades are 86, 84, 90, and 90. If he scores 0 on the next spelling quiz, what will happen to the MEAN of his scores?

  A) It will increase by 13.5. B) It will decrease by 13.5.

  C) It will increase by 17.5. D) It will decrease by 17.5.

Warm-up

Coordinate AlgebraEOCT Review

Unit 5 – Transformations in the Plane

Key Ideas

Precise definitions: Angle Circle Perpendicular lines Parallel lines Line Segment

Unit 5 - Transformations

Represent transformations in the plane Compare rigid and non-rigid▪ Translations▪ Rotations▪ Reflections

Understand Dilations

Key Ideas

Given shapes – Determine which sequence of rotations and reflections would map it on itself

Develop definitions of rotations, reflections and translations

Translations

Translate C(-4, 7) by (x – 7, y – 9).

C’(-11, -2)

Examples

Reflections

Reflect across the y-axis

Examples

Describe every transformation that maps the given figure to itself.

CW/HW

Practice Problems