What if we enlarged the rectangle by a scale of 2:1, what is the area then? Rectangle C 2 cm 5 cm Example 2.

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Presentation transcript:

What if we enlarged the rectangle by a scale of 2:1, what is the area then? Rectangle C 2 cm 5 cm Example 2

What if we enlarged the rectangle by a scale of 2:1, what is the perimeter then? Rectangle C 2 cm 5 cm Example 2 Continued

Congruent Triangles

The Side-Angle-Side (SAS) Congruence Theorem If 2 sides and the included angle of a are congruent to the corresponding 2 sides and the included angle of a second , then the ‘s are congruent.

8.3 (8th) Number 8

8.3 (8th) Number 14

Included side= the line segment between 2 angles of a The Angle-Side-Angle (ASA) Congruence Thm If 2 angles and the included side of a are congruent to the corr. 2 angles and the included side of another , then the ‘s are congruent.

8.4 (8th) Number 2

The Angle-Angle-Side (AAS) Congruence Thm if 2 angles and the non-included side of a are congruent to the corr. Angles and non- included side of another , then the ‘s are congruent.

8.4 (8th) Number 5

8.4 (8th) Number 15

9.1 (8th) Number 3

Example