Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download 6.3 Use Similar Polygons
Document related concepts
Multilateration wikipedia , lookup
Tessellation wikipedia , lookup
Dessin d'enfant wikipedia , lookup
Penrose tiling wikipedia , lookup
Rational trigonometry wikipedia , lookup
Euler angles wikipedia , lookup
List of works designed with the golden ratio wikipedia , lookup
Reuleaux triangle wikipedia , lookup
Trigonometric functions wikipedia , lookup
History of trigonometry wikipedia , lookup
Golden ratio wikipedia , lookup
Euclidean geometry wikipedia , lookup
Transcript
6.3 Use Similar Polygons Similar (῀) Polygons • Corresponding angles are congruent • Corresponding sides are in proportion Scale factor Ratio of the lengths of two corresponding lengths of matching sides. Always reduces A 12 Q 10 D B 6 x 16 C 4 T 8 • Find scale factor of ABCD to QRST • Find x R S Perimeters of similar figures • Ratio of the perimeters is equal to the ratio of the corresponding side lengths 6.4 Prove Triangles Similar by AA • AA similarity postulate – if two angles of one triangle are congruent to two angles of another triangle, then the triangles are similar. See pg. 382 Given: AB // DE A Prove: triangle ABC is similar to triangle EDC D C B E
