Copy of Copy of ML M2U2L2 Congruent Parts-Teacher Slide Deck

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.

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

Multiple Select

Based on the diagrams and activities, which of the following are always preserved under rigid transformations?

• Angle measures

• Side lengths

• Orientation

• Area

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

Open Ended

Explain how you know those segments are congruent.

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.

Open Ended

Justify that angle ABC is congruent to angle DEF.

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.

Open Ended

Describe a method to divide a given polygon into two congruent polygons using additional line segments.

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

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.

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?

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?

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?

Multiple Choice

Name the corresponding angle or side.

• A
• B
• C
• D

Open Ended

After today's lesson on congruence, what questions do you still have or what would you like to know more about?

Open Ended

What is one key concept you learned today about congruent parts in geometry?