Chapter 9 Transformations
Get Ready!
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Lesson 4-1 Congruent Figures
The triangles in each exercise are congruent. For each pair, complete the congruence statement
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Lesson 6-1 Regular Polygons
Determine the measure of an angle of the given regular polygon.
- pentagon
- octagon
- decagon
- 18-gon
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Lessons 6-2, 6-4, 6-5, and 6-6 Quadrilaterals
Determine whether a diagonal of the given quadrilateral always, sometimes, or never produces congruent triangles.
- rectangle
- isosceles trapezoid
- kite
- parallelogram
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Lesson 7-2 Scale Drawing
The scale of a blueprint is
- The length of a wall in the blueprint is 2.5 in. What is the length of the actual wall?
- What is the blueprint length of an entrance that is 5 ft wide?
Looking Ahead Vocabulary
- Think about your reflection in a mirror. If you raise your right hand, which hand appears to be raised in your reflection? If you are standing 2 ft from the mirror, how far away from you does your reflection appear to be?
- The minute hand of a clock rotates as the minutes go by. What point of the minute hand stays fixed as the hand rotates?
- The pupils in your eyes dilate in the dark. What do you think it means to dilate a geometric figure?
- An interior designer may use a repeating pattern when planning the tiling of a bathroom floor. What do you think a tiling is in geometry?
Table of Contents
- 6-1 The Polygon Angle-Sum Theorems
- 6-2 Properties of Parallelograms
- 6-3 Proving That a Quadrilateral Is a Parallelogram
- 6-4 Properties of Rhombuses, Rectangles, and Squares
- 6-5 Conditions for Rhombuses, Rectangles, and Squares
- 6-6 Trapezoids and Kites
- 6-7 Polygons in the Coordinate Plane
- 6-8 and 6-9 Coordinate Geometry and Coordinate Proofs