Vocab Words
Formulas
Notations
Angles
Practice problems
100
What do complementary angles equal?
90 degrees
100
line segment addition postulate
AB + BC = AC
Part 1 + part 2 = whole
100
A. line B. ray C. line segment
A. JK<-->
100
Obtuse degrees
over 90 degrees
100
An angle measures 62°. What is the measure of its complement?
28 degrees
200
What does congruent mean?
same size and shape
200
Angle addition postulate
<1 + <2 = <1+2 (whole)
part 1 + part 2 = whole
200
A. line B. ray C. line segment
B. TU -->
200
straight angle degree
180 degrees
200
x = 12
z = 80
300
What is the definition of Midpoint?
the middle point between two points on a line segment
300
midpoint formula
(point 1 + point 2) /2
300
plane X or ABG
300
Congruent angles have _______
the same degrees
300
Two angles are supplementary and one angle is 4 times as large as the other angle. What is the size of the smaller angle?
a. 144 b. 18 c. 72 d. 36 e. 45
d. 36
400
What is the difference between Coplanar and Collinear?
coplanar deals with planes and collinear deals with lines
400
pythagorean theorem
a2 + b2 = c2
400
Name 2 planes
EFD ABC HDC AFG ect.
400
Vertical angles are ________
congruent
400
Double points
5 and the square root of 7
500
What is the difference between a midpoint and a bisect?
bonus 100 pts: how are they similar
midpoint deals with lines/segments and bisects are for angles
bonus: they both cut into equal halves
500
distance on a line segment
|point 2 - point 1|
500
Make an example of opposite rays on a line and write their notations
<---A----C-----B---> CA---> and CB---->
500
In the figure, m∠1=x+93° and m∠2=2x°
Write an equation to find x. Make sure there is an “=” in your answer.
x + 93 + 2x = 180
500
D is between C and E. If CD is 3x-2, DE is 12, and CE is 7x-6, find CD.
a.Draw a picture and label it.
b. Solve by finding CD.
a. Draw
b. CD=10