Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download 4-2 = Congruent Triangle Theorems
Document related concepts
Golden ratio wikipedia , lookup
Dessin d'enfant wikipedia , lookup
Penrose tiling wikipedia , lookup
Multilateration wikipedia , lookup
History of geometry wikipedia , lookup
Technical drawing wikipedia , lookup
Apollonian network wikipedia , lookup
Euler angles wikipedia , lookup
Rational trigonometry wikipedia , lookup
Reuleaux triangle wikipedia , lookup
Trigonometric functions wikipedia , lookup
History of trigonometry wikipedia , lookup
Pythagorean theorem wikipedia , lookup
Transcript
Congruent Triangles Remember … • In congruent triangles, ALL corresponding sides and angles are congruent. In the next few sections we’ll learn some shortcuts so you only need to know 3 pairs of sides or angles (instead of 6) to show the triangles are congruent. SSS Postulate SSS Postulate Stands for side—side—side If all 3 sides of one triangle are congruent to the corresponding sides of another triangle, then the triangles are congruent. SSS Postulate • If the sides are the same, the angles will automatically be the same too. Why? SAS Postulate SAS Postulate Stands for side—angle—side If 2 sides and the angle between them in one triangle are congruent to the corresponding parts of another triangle, then the triangles are congruent. … So here the triangles AREN’T congruent. SAS Postulate Explain why QPR TSR. REMEMBER • SSS • SAS
