to prove triangles congruent using the hl theorem students will use ssa to prove right triangles...

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To prove triangles congruent using the HL Theorem

Students will use SSA to prove right triangles congruent and will use counterexamples of non-right triangles to find why SSA is not a universal rule.

Statements Reasons

1. , Given2. Definition of 3. Definition of 4. HL

4-6 Quiz

The following questions are designed to help you determine if you understood today’s lesson

Please record the number you get right on your portfolio sheet

If you do not understand why you missed one of the problems make sure you find time to come and ask me!

1. For which situation could you prove ∆1 ∆2 using the Hypotenuse-Leg Theorem?

A. I onlyB. II onlyC. III onlyD. II and III

2. Is there enough information to conclude that the two triangles are congruent? If so, what is a correct congruence statement?

A

CB D

| |

A. Yes; ∆CAB ∆DACB. Yes; ∆ACB ∆ACDC. Yes; ∆ABC ∆ACDD. No, the triangles

cannot be proven

congruent.

3. What additional information will allow you to prove the triangles congruent by the HL Theorem?

A

E

B

D

C

|

|

.A A EB. mBCE = 90C. AC DCD. AC BD

4. is perpendicular to at B between A and D. ∠DAC ≌ ∠ADC. By which of the five congruence statements, HL, AAS, ASA, SAS, and SSS, can you conclude ΔABC ≌ΔDBC?

A. HL, AAS, ASA, and SASB. HL, AAS, and ASAC. HL and ASAD. HL, AAS, ASA, SAS, and

SSS

5. Is ∆PQS ∆RQS by HL? If so, name the legs that allow the use of HL.

P

Q

R

S

A. SQ PRB. PS RSC. PQ RQD. SQ SQ

Assignment

4-6 p. 262 – 263 #8-24 even

Then rate your assignment 4-3-2-1-0 as to how well you

understood the lesson and write why you rated yourself that way.