7.5 p arts of similar triangles special segments of similar triangles
Post on 17-Jan-2016
213 Views
Preview:
TRANSCRIPT
7.5 PARTS OF SIMILAR TRIANGLESSpecial Segments of Similar Triangles
REVIEW
Triangle Similarity Postulates AA SAS SSS
Proportionality—similar figures are proportional Same scale factor applies to all corresponding
sides Scale Factor—new length / old length Side Splitter Theorem (Theorem 7.5) Midsegment Theorem
REVIEW SCALE FACTOR WITH SCALE ELLA
Let’s watch this short video to review scale factor:
http://mathsnacks.com/scaleella.php Complete the worksheet
Be prepared to share out your responses!
7.5 PARTS OF SIMILAR TRIANGLES
If two triangles are similar some of their special segments are also proportional
Recall these Special Triangle Segments: Altitude Angle bisector Median
page 501
SCALE FACTOR = NEW LENGTH / OLD LENGTH
We can use this to help us set up problems with special segments.
Example:
Try another:
EXAMPLE:
THEOREM 7.11 TRIANGLE ANGLE BISECTOR
MORE PRACTICE:
top related