Symmetry, Dilations, Isometries & Tessellations (G.3c, d)
WU- Checkpoint G.6- graded!!! Obj: SWBAT identify types of symmetry
(9.4), dilated images (9.5), isometries (9.6) and figures that
tessellate (9.7) *hw/hw log/wkb p. 237, 241, 245, 249 Homework(day
68) TEI/SOL packet (next two pages) Formula Quiz/SOL TEST Storybook
collected for completion! Pearsonsuccess.net (due Friday) Line of
Symmetry fold a picture in half the fold, is the line of symmetry.
Point of Symmetry common point usually in the center of the object.
Transformations A change in position, shape or size of a picture. A
transformation maps a figure onto its image. Pre image Original
figure.Image transformed figure. Symbol ___ (indicates a mapping)
Prime Notation used to identify image points. Reflection A
transformation represents a flip of a picture. Figure may be
reflected in a point, a line or a plane. Line of Reflection is a
line through a figure that separates the figure into two mirror
images. Pre - image Image Ex: Dilations Find the measure of the
dilation image of segment AB, 6 units long, with a scale factor of
1.S.F. = 4: image will be an enlargment. The image will be 24 units
long. 2.S.F. = 2/3: the image will be a reduction. The image will
be 2/3 times 6 or 4 units long. 3.S.F. = 1: this will be a
congruence transformation. The image will be the same length as the
original segment, 1 unit long. Lesson 10-5: Transformations-Henrico
County 14 Classify each tessellation as Regular or semi-regular?
Regular Semi-Regular Look at the following shapes: Regular polygon
TriangleSquarePentagonHexagonHeptagonOctagon Measure of 1 interior
angle Does it Tessellate X XX Figures will tessellate only if the
interior angle can be used in increments of 360 Classwork: 1.Graph
triangle ABC where:A(5, 9), B(10, 2), C(3, 5) 2. Quadrant 1: Pre
image label vertices 3. Reflect triangle PQR over the x-axis. Label
vertices with ordered pairs. 4.Reflect triangle PQR over the
y-axis. Label vertices with ordered pairs. 5. Translate Triangle
PQR Write the vertex matrix and the matrix for PQR. Graph and label
vertices. Formula Quiz 1.Arc length of a circle2. Midpoint formula
3. Two chords in a circle 4. Angle outside of a circle 5. Cosine
trigonometric Ratio 6. Perpendicular Slope formula
