5 minute check solve. complete in your notebook. 1. 115 + d = 576 2. x - 145 = 537 3. 140c = 35 4. =...
TRANSCRIPT
Tuesday, Oct 30
5 Minute CheckSolve. Complete in your notebook.1. 115 + d = 576
2. x - 145 = 537
3. 140c = 35
4. = 23
5 Minute CheckSolve. Complete in your notebook.1. 115 + d = 576
5 Minute CheckSolve. Complete in your notebook.1. 115 + d = 576 -115-115 d = 461
5 Minute CheckSolve. Complete in your notebook.2. x - 145 = 537
5 Minute CheckSolve. Complete in your notebook.2. x - 145 = 537 +145 +145 x = 682
5 Minute CheckSolve. Complete in your notebook.3. 140c = 35
5 Minute CheckSolve. Complete in your notebook.3. 140c = 35 140 140
c =
5 Minute CheckSolve. Complete in your notebook.4. = 23
5 Minute CheckSolve. Complete in your notebook.4. 35 = 23 35
t = 805
Thursday, Feb 27Chapter13-1
Angles
AnglesObjective: To draw and label angles.
AnglesAngles are measured in degrees. One degree is 1/360 of a circle. (Or there are 360 degrees in a circle).
AnglesAngles have two sides that share a common endpoint called a vertex.
vertex
AnglesA right angle measures 90.
(Draw angle in notes.)
Right angle symbol
AnglesA straight angle measures 180.
(Draw angle in notes.)
AnglesAn obtuse angle measures between 90 and 180.
(Draw angle in notes.)
AnglesAn acute angle measures between 0and 90.
(Draw angle in notes.)
AnglesAn angle of 89 is what type of angle?
AnglesAn angle of 89 is what type of angle?
Since 89 is between 0 and 90, it is an acute angle.
AnglesAn angle of 90 is what type of angle?
AnglesAn angle of 90 is what type of angle?
90 is a right angle.
AnglesAn angle of 114 is what type of angle?
AnglesAn angle of 114 is what type of angle?
Since 114 is between 90 and 180, it is an obtuse angle.
AnglesIs this angle right, straight, obtuse or acute?
AnglesIs this angle right, straight, obtuse or acute?
Since the angle is less than 90, it is acute.
AnglesIs this angle right, straight, obtuse or acute?
AnglesIs this angle right, straight, obtuse or acute?
Since the angle is 180, it is straight.
AnglesIs this angle right, straight, obtuse or acute?
AnglesIs this angle right, straight, obtuse or acute?
Since the angle has the right angle symbol, it must be a right angle.
AnglesTwo angles are complementary if the sum of their angles is 90.
Two angles are supplementary if the sum of their angles is 180.
AnglesAngles A and B are complementary. If m A = 25, what is m B?
AnglesAngles A and B are complementary. If m A = 25, what is m B?
90 - 25 = m B
65 = m B
AnglesAngles M and N are supplementary. If m M = 85, what is the measure of N?
AnglesAngles M and N are supplementary. If m M = 85, what is the measure of N?
M + N = 180
85 + N = 180
N = 95
AnglesAngles C and D are complementary. If m C = 47, what is the measure of D?
AnglesAngles C and D are complementary. If m C = 47, what is the measure of D?
C + D = 90
47 + D = 90
D = 43
AnglesAngles A and B are supplementary. If m A = 127, what is the measure of B?
AnglesAngles A and B are supplementary. If m A = 127, what is the measure of B?
A + B = 180
127 + B = 180
B = 53
AnglesAngles F and G are supplementary. If m F = 12, what is the measure of G?
AnglesAngles F and G are supplementary. If m F = 12, what is the measure of G?
F + G = 180
12 + G = 180
G = 168
AnglesIf there are 360 in a circle and 12 hours on a clock, how many degrees is one hour?
AnglesIf there are 360 in a circle and 12 hours on a clock, how many degrees is one hour? 360 12 = 30
AnglesWhat is the angle formed by the hands of the clock at 2:00?
AnglesWhat is the angle formed by the hands of the clock at 2:00?60 or 300
AnglesWhat is the angle formed by the hands of the clock at 9:00?
AnglesWhat is the angle formed by the hands of the clock at 9:00?90or 270
AnglesWhat is the angle formed by the hands of the clock at 6:00?
AnglesWhat is the angle formed by the hands of the clock at 6:00?180
AnglesAngles around a point will always add to 360.
AnglesWhat is the unknown angle?
AnglesWhat is the unknown angle?
63 + 50 + 75 + 110 = 298, 360 298 = 62
AnglesWhat is the unknown angle?
AnglesWhat is the unknown angle?
44 + 101 + 95 + 36 = 276, 360 276 = 84
AnglesWhat is the unknown angle?
AnglesWhat is the unknown angle?
79 + 45 + 63 + 70 = 257, 360 257 = 103
AnglesWhat is x?
AnglesWhat is x?
x + 2x + 3x + 4x +5x = 15x, 15x =360
AnglesWhat is x?
x + 2x + 3x + 4x +5x = 15x, 15x =360 15x = 360 15 15
x = 24
AnglesWhat did the acorn say when he grew up?
AnglesWhat did the acorn say when he grew up?
Answer: Geometry (Gee, I'm a tree!)
AnglesAgenda Notes
Homework Study Guide13-1Due Friday, Feb 28Just classify the angle, do not measure with a protractor.
Mid-Chapter 13 QuizMonday, March 3