Chapter+2

=**Chapter 2**= Topics: __Vertical Angles:__Angles that are across from each other....Congruent That are equal.

__Adjacent Angles:__ Angles that share the same vertex.

__1.Straight Angles:__ equal 180 degrees

__2. Corresponding Angles:__ are in the same position

__3. Alternate interior angles:__ are congruent by leah

__The angles formed by parallel lines:__ 1) Alternate interior- opposite side, there congruent

2) Same- Side Interior- On the same side, there supplementary

3) Corresponding- They are two parallel lines with a transversal.

4)

__The angles in a triangle:__ There are only three of them and they add up to 180 degrees. A¹ + A²+ A³ = 180° 20+50+ A³=180°<- By Lazar -20-50+ A³=180°<- By Lazar A³=110° <- By Lazar. =]

__Area of Triangles__ Formula:1/2bh b= base h= hieght <- By Lazar base x height all over 2 or A=(B•H)/2

Without the formula:

__Area of Rectangles__ B•H base x height

__Area of Parallelograms__ B•H base x height

__Area of Trapezoids__ H(B1+B2)/2 height (base 1+ base 2) all over 2