SSS and SAS Day 2

Presentation

•

Mathematics

•

10th Grade

•

Medium

•

CCSS

HSG.SRT.B.5

Standards-aligned

Maria Goodman

Used 111+ times

FREE Resource

5 Slides • 8 Questions

Reflexive Property and

Vertical Angles in SSS and SAS

Today you will learn what the reflexive property and vertical angles are and how to apply them to congruent triangles.

All three pairs of corresponding sides are congruent

All three sides have to marked as congruent
or
The triangles have to share a common side (reflexive property)

SSS Review

In geometry, the reflexive property of congruence states that an angle, line segment, or shape is always congruent to itself.

Reflexive Property

Multiple Choice

Does SSS prove the Triangles congruent?

No, only two pairs of sides is marked as congruent

Yes, all three sides are congruent because of reflexive property

Multiple Choice

Does SSS prove the triangles are congruent?

No, only two sides are marked as congruent

Yes, we can use reflexive property to mark the third side congruent

Two sides are congruent

and

The angles between the sides are congruent

Remember.......

Vertical angles are congruent so when

you see them mark them as congruent.

SAS Review

Multiple Choice

Does SAS prove the triangles are congruent?

Yes

Multiple Choice

Does SAS work to prove the triangles are congruent?

No, there are no congruent angles

Yes, two sides are congruent and the included angle is congruent because they are vertical angles

Now it is time for you to practice..........

Multiple Choice

Congruent by SAS

Congruent by SSS

Not enough information to determine if they are congruent.

Multiple Choice

Which triangle congruence theorem can be used to prove the triangles are congruent?

SSS

SAS

None

Multiple Choice

How are the triangles congruent?

SAS

SSS

Not congruent

Multiple Choice

Which triangle congruence theorem can be used to prove the triangles are congruent?

SSS

SAS

Not congruent

Reflexive Property and

Vertical Angles in SSS and SAS

Today you will learn what the reflexive property and vertical angles are and how to apply them to congruent triangles.

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