1-5 Bisectors1-6 The Coordinate Plane1-7 Perimeter and Area

Vocabulary

EA B

C

D

Perpendicular Lines – lines that intersect to form right angles.

AB CD

Vocabulary

Perpendicular Bisector

HG B FI and FG ≅ GI

Angle Bisector

<JKM <MKL≅

GF I

H

J

K L

M

Formulas

Distance Formula

Midpoint Formula

Rectangle

Perimeter: add sides

Area: length x width

Triangle

Perimeter: add sides

Area: ½ base x height

(x2 - x1)2 + (y2 - y1)2

(x1 + x2)

2,

(y1 + y2)

2

Examples

1) Find x

2) Find m<JKL

A(3,8), B(0,-4), C(-5,-6)

3) Find distance of AB.

4) Find midpoint of AC.

5) B is midpoint of AD. Find the coordinates of D.

K M bisects J K L

3x - 7

2x + 10

J

K L

M

ExamplesFind perimeter and area.

6) A(-7,-2), B(-3,3), C(4,-2) 7)A(-2,0), B(2,4), C(8,-2), D(4,-6)