Copy of Copy of ML M2U2L2 Congruent Parts-Teacher Slide Deck
Presentation
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Mathematics
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9th Grade
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Practice Problem
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Easy
+5
Standards-aligned
Grace Smythe
Used 1+ times
FREE Resource
27 Slides • 20 Questions
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Multiple Choice
Which of the following best describes how you feel about learning new concepts in geometry today?
Excited and ready to learn!
A bit nervous but willing to try.
Not sure what to expect.
I find geometry challenging.
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5
Multiple Choice
Which of the following statements best describes the purpose of using rigid transformations in geometry?
To explain why figures are congruent
To change the size of figures
To find the area of figures
To compare the colors of figures
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Multiple Select
Based on the diagrams and activities, which of the following are always preserved under rigid transformations?
Angle measures
Side lengths
Orientation
Area
9
Multiple Choice
Which sequence of rigid motions could be used to map triangle ABC onto triangle DEF?
A translation followed by a rotation
A dilation followed by a reflection
A reflection followed by a dilation
A translation followed by a dilation
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11
Fill in the Blanks
What is the image of segment BC after the transformation that makes triangle ABC congruent to triangle DEF?
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Open Ended
Explain how you know those segments are congruent.
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Multiple Choice
If triangle ABC is reflected and rotated to form triangle DEF, what can you say about their corresponding parts?
All corresponding parts are congruent.
Only the sides are congruent.
Only the angles are congruent.
None of the parts are congruent.
16
Open Ended
Justify that angle ABC is congruent to angle DEF.
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19
Fill in the Blanks
If two triangles are congruent, then angle Q in triangle PQR corresponds to which angle in triangle DEF?
20
Multiple Select
Which of the following statements are true about corresponding parts of congruent triangles?
Corresponding sides are congruent.
Corresponding angles are congruent.
Corresponding sides and angles are congruent.
Only the perimeters are equal.
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Open Ended
Describe a method to divide a given polygon into two congruent polygons using additional line segments.
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Fill in the Blanks
A polygon that is congruent to another polygon must have the same number of
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Multiple Select
Which pairs of figures are congruent in the activities shown? Select all that apply.
△ABC and △FED
PZJM and LYXB
△JKL and △QRS
ABCDE and PQRST
29
Multiple Choice
Which of the following statements about congruent figures is correct based on the activities shown in the images?
Congruent figures have the same shape and size.
Congruent figures have different shapes but the same size.
Congruent figures have the same shape but different sizes.
Congruent figures have no relation in shape or size.
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Open Ended
Triangle ABD is a rotation of triangle CDB around point E by 180°. Is angle ADB congruent to angle CDB? If so, explain your reasoning. If not, which angle is ADB congruent to?
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Open Ended
Polygon HIJKL is a reflection and translation of polygon GFONM. Is segment KJ congruent to segment MN? If so, explain your reasoning. If not, which segment is NM congruent to?
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Open Ended
Quadrilateral PQRS is a rotation of polygon VZYW. Without being given a diagram, can you determine if the angle QRS is congruent to angle ZYW? If so, explain your reasoning. If not, which angle is QRS congruent to?
36
Multiple Choice
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46
Open Ended
After today's lesson on congruence, what questions do you still have or what would you like to know more about?
47
Open Ended
What is one key concept you learned today about congruent parts in geometry?
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