VOCABULARY

1
VOCABULARY

• Congruent
• Exactly equal ?
• ABCD means the measure of segment AB equals the
  measure of segment CD.
• AB?CD means segments AB and CD are congruent

Measures are and segments are ?
B
A
C
D
2
VOCABULARY

• Congruent
• Exactly equal
• mAmC means the measure of angle A equals the
  measure of angle C.
• A ? C means angles A and C are congruent

A
3
VOCABULARY

• The midpoint of a segment is the point that
  divides, or bisects, the segment into two
  congruent segments.
• A segment bisector is a segment, ray, line, or
  plane that intersects a segment at its midpoint.

4
Vocabulary
A segment bisector is a segment, ray, or line
that divides an angle into two congruent angles
A
D
?ABC is bisected by ray BD ABD ? DBC mABD
mDBC
C
B
5
Vocabulary

• Two lines are perpendicular if they intersect to
  form a right angle 90º.
• A line is perpendicular to a plane if it is
  perpendicular to each line in the plane.

6
(3,4)
a2 b2 c2

• (4- -1)5

(-2, -1)
(3- -2)5
7
VOCABULARY

• Finding the Midpoint of two points
• Point 2 (x2 , y2)
• Point 1 (x1 , y1)

Finding the distance between two points Point 2
(x2 , y2) Point 1 (x1 ,
y1) (P2-P1)2 (x2- x1)2, (y2-y1)2
8

• distance.gsp

9

• Find the MP of PQ for P(2, 7) and Q(-4, 2).
  Round to the nearest tenth. 

P (2, 7) Q(-4, 2) PQ(2-4, 72) MP(-2/2,
9/2) (-1, 4.5)
10

• Find PQ for P(2, 7) and Q(-4, 2). Round to
• the nearest tenth. 
• A.5.4
• B.7.8 
• C.6
• D.-7.8

11

• If one leg of a right triangle is 17.2 cm and
  the other leg is 22.5 cm, what is the length of
  the hypotenuse? 
• A.22.5 cm
• B.39.7 cm 
• C.6.3 cm
• D.28.3 cm 

12
Find ST if S is between R and T, SR 2x 7, ST
x - 6, and RT 100  A.33 B.99  C.74 D.27