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Mathematics 20 Online
OpenStudy (ayyookyndall):

State whether Triangle ABC and Triangle AED are congruent. Justify your answer. **Picture Below**

OpenStudy (ayyookyndall):

OpenStudy (ayyookyndall):

@StudyGurl14

OpenStudy (studygurl14):

Yes, but ASA theorem of congruence

OpenStudy (studygurl14):

by* not but

OpenStudy (ayyookyndall):

So how do you jusify it....?

OpenStudy (studygurl14):

it is given that <BAC and <EAD are equal

OpenStudy (ayyookyndall):

I thought it was SSS

OpenStudy (studygurl14):

It is also given that side AD is congruent to AC

OpenStudy (studygurl14):

I'm not done. Will you let me finish? lol

OpenStudy (ayyookyndall):

Sorry haha.

OpenStudy (studygurl14):

hold on...you might be right

OpenStudy (ayyookyndall):

Is it both?

OpenStudy (studygurl14):

nope, you are right. It is SSS

OpenStudy (studygurl14):

Because those sides that I mentioned earlier are congruent, the third side must also be congruent

OpenStudy (studygurl14):

so...SSS

OpenStudy (ayyookyndall):

So I say Triangle ABC and Triangle AED are congruent by SSS. They are congruent because it is given that <BAC and <EAD are equal. It is also given that side AD is congruent to AC. Since those sides are congruent, the third side must also be congruent. @StudyGurl14

OpenStudy (studygurl14):

Ignore that part about the angle i said. hold on while i fix it...

OpenStudy (studygurl14):

Triangle ABC and Triangle AED are congruent by SSS. They are congruent because it is given that side AD is congruent to AC. It is also given that side BC is congruent to side ED. Since those sides are congruent, the third side must also be congruent.

OpenStudy (cwrw238):

its a bit faint but aren't the 2 sides AB and AE both given = to 7?

OpenStudy (studygurl14):

Oh yea, that too ^

OpenStudy (studygurl14):

Add this: Since side AB and side AE are both equal to 7, they are also equal to each other by the transitive property of equality

OpenStudy (cwrw238):

so all 3 sides are equal - congruent by SSS

OpenStudy (studygurl14):

Revised: Triangle ABC and Triangle AED are congruent by SSS. They are congruent because it is given that side AD is congruent to AC. It is also given that side BC is congruent to side ED. Thridly, it is given that sides AB and AE are both length 7. This means that sides AB and AE are congruent by the transitive property of equality. Since those sides are congruent, triangles ABC and AED are congruent by SSS.

OpenStudy (cwrw238):

there is no need to consider the equal angles - just the 3 sides

OpenStudy (studygurl14):

Hey @ayyookyndall medal me, I'll medal @cwrw238 , and @cwrw238 can you medal @ayyookyndall ? Since we all did a good job...

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