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2009
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November
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- hw #4-7 Unit Test Review
- hw #4-6 Median, Altitudes and Bisectors
- Any solutions to the NJML $168 question??
- hw #4-5 Using More Than One Pair of Congruent Tria...
- hw #4-4 AAS & HL
- just a question....
- hw #4-3 Isosceles Triangle Theorems
- hw #4-2 Using Congruent Triangles
- hw #4-1 SAS, ASA, SSS, AAS, ARG!!!!
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November
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dont get #27 on hw
ReplyDeleteCHRIS
or 29
ReplyDeleteCHRIS
Hey Chris,
ReplyDeleteAs for #27...
The challenge is to "see" the similar triangles... clearly you see the right angles... can you find the triangles that include the right angles and share angle-A?
Trngl-EHA is similar to Trngl-GDA based on AA, yes? From that you can build a proportion that will lead you to the proof using the means-extremes property.
As for #29...
ReplyDeleteSimilar to #27, can you can find two triangles that include the congruent angles (1&2) and that share angle-A?
Trngl-CAB is similar to trngl-BAD based on AA. Once again, you should be able to build a proportion that will support the proof.
By definition, you know that corresponding sides of similar triangles are in proportion.