Exploring Congruence and Corresponding Parts

This video tutorial by Mr. Weaver covers eighth-grade module 9, lesson 2 on congruence and corresponding parts. It explains how to use properties of rotations, reflections, and translations to identify congruent parts of figures and find missing measures. The lesson includes identifying congruent sides and angles using tick marks and arcs, understanding congruence notation, writing congruent statements, and solving for missing measures using congruence.

What properties are used to identify congruent parts of congruent figures?

• Stretching, Compressing, and Twisting

• Flipping, Sliding, and Turning

• Rotations, Reflections, and Translations

• Scaling, Shearing, and Dilation

How are corresponding sides indicated in congruent figures?

• By drawing equal number of tick marks on those sides

• By shading the sides

• By labeling the sides with different letters

• By coloring the sides differently

Which symbol is used to denote that two triangles are congruent?

• A single line

• A double arrow

• An equal sign with a squiggle over it

• A tilde

If segment JK has one tick mark, which segment in the congruent triangle corresponds to it?

• Segment GH

• Segment HI

• Segment KL

• Segment IG

Which angle corresponds to angle J in the congruent triangle?

• Angle G

• Angle H

• Angle I

• Angle K

What should you do if you make an error in identifying corresponding parts?

• Change the figures

• Reflect on the mistake and find a way to avoid it in the future

• Ignore the mistake and move on

• Ask a classmate to do it for you

Which segment corresponds to segment AB in the congruent triangle?

• Segment NO

• Segment PM

• Segment MN

• Segment OP

If segment KS has two tick marks, which segment in the congruent triangle corresponds to it?

• Segment PM

• Segment OP

• Segment MN

• Segment NO

If angle CEB is 50 degrees, what is the measure of angle FGD in the congruent triangle?

• 50 degrees

• 40 degrees

• 60 degrees

• 90 degrees

If angle B is 110 degrees, what is the measure of angle X in the congruent triangle?

• 90 degrees

• 50 degrees

• 70 degrees

• 110 degrees