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Unit 3
Vocabulary
Misc
100

Factor: 3x2 - 4x -4

( 3x +2) (x-2)

100

What is a midpoint? 

a point that divides one segment into 2 congruent segments 

100

True or False: Vertical angles proves 2 lines cut by a transversal are parallel. 

False, vertical angles are always true.

100

Define Angle Bisector

a line, ray or segment that splits an angle into two congruent angles. 

100

True or False: Complementary angles are angles that sum to 180 degrees. 

False, they sum to 90 degrees. 

200

What is slope intercept form? 

y= mx+b

200
Name two facts about equilateral triangles.

All sides are congruent and all angles are 60 degrees. 

200

What is the name of adjacent angles that sum to 180?

Linear pairs

200

Define Triangle Sum Theorem. 

The sum of all angles in a triangle is 180 degrees. 

200

State the Partition Formula.

x1 + a/a+b(x2 -x1) , Y1 + a/a+b  (y2- y1)

300

If the slope of line a is 2 and line b is perpendicular to line a, what is the slope of line b? 

m= -1/2

300

What is the exterior angle theorem? 

The 2 remote angles add to the exterior angle.  

300

How do we use auxiliary lines? 

Auxiliary lines create triangles and special angle relationships by completing the transversals. 

300

Define Isosceles Triangle.

A triangle with 2 congruent sides and 2 congruent angles. 

300

What is Ms. Alexander's Favorite color? 

Purple 

400

Line T passes through (1,3) and (-4,2). Write the equation is point- slope form and slope intercept form. 

y-3 = 1 (x-1) or y+2= 1 (x+4)

y= x+2 

400

Define Angle. 

The space formed between 2 rays that share a common endpoint (vertex) measured in degrees.

400

Explain the name "Alternate Interior angles"

the angles are in between the parallel lines and are on opposite sides of the transversal
400

Define Perpendicular Bisector.

Lines that intersect a segment at its midpoint and has opposite reciprocal slope

400

In triangle ABC angle a=12x , angle b= x2 + 36, angle c= -3x +54. Classify the triangle using the best name. 

Isosceles Triangle/ acute triangle

500

Factor:  2x2 -10x -48 =0

(x-8) (x+3)

500

How many degrees is a full angle? 

360 degrees.

500

Ms. Alexander's Birthday 

March 23rd :)

500

Define Colinear points

points that lie on the same line 

500

Point p partitions AB into a ratio such that AP:PB  is 2:1. The coordinates of A are (4, -8) and B (-5, 1). Determine and state the coordinates of P. 

P (-2, -2)