Upload
hina
View
69
Download
0
Tags:
Embed Size (px)
DESCRIPTION
3c: Justify congruency and symmetry of two figures (DOK 2) 4d: Solve problems involving scale factors using ratios and proportions (DOK 2). By: Deia Sanders. Study these pictures. Similar or Congruent?. Vocabulary. - PowerPoint PPT Presentation
Citation preview
3c: Justify congruency and symmetry of two figures (DOK 2)
4d: Solve problems involving scale factors using ratios and proportions
(DOK 2)
By: Deia Sanders
Study these pictures
Similar or Congruent?
Vocabulary
Similar: two polygons are similar if the corresponding sides are in the same proportion; if the polygons are similar, the corresponding angles will be equal.
Let’s look at pages 138 and 139
Homework
Handout #1Pages 155-157
Day 2
3c: Justify congruency and symmetry of two figures (DOK 2)
4d: Solve problems involving scale factors using ratios and proportions
(DOK 2)
Let’s Review from yesterday
Please exchange papers to check homework
Find Missing Lengths Using Proportions
Turn to pages 140-141
Examples
Homework
Complete Handout #2 pages 159-160
Day 3
3c: Justify congruency and symmetry of two figures (DOK 2)
4d: Solve problems involving scale factors using ratios and proportions
(DOK 2)
Let’s Review from yesterday
Please exchange papers to check homework for a grade
Vocabulary
Line of symmetry: a line is a line of symmetry for a figure if the reflection of every point on that figure with respect to the line is also a point of the figure
(Where you can fold and object and it’s the exact same on both sides)
Turn to page 142
Examples
Homework
Handout #3 Page 162
Closure
Where could we fold you to find your line of
symmetry?
Day 4
3c: Justify congruency and symmetry of two figures (DOK 2)
4d: Solve problems involving scale factors using ratios and proportions
(DOK 2)
Congruent: if two polygons are congruent, then their corresponding or matching sides and angles are also congruent. Congruent figures are also similar, so the corresponding sides can also be found using ratios.
Vocabulary
Congruent = Same
Turn to the bottom of page 142 and page 143
Secret trickThe sides and angles of polygons are listed the same order, or order of congruence. You can line up the letters from each figure on top of each other and it will match up the congruent sides and angles.
Examples
Homework
Handout #4
Page 164