Download Name: Period: Date: Unit 1: Introduction to Geometry Section 1.4

Name:
Unit 1: Introduction to Geometry
CRS
Review: EEI 20-23
Solve routine first degree equations
Focus: PPF 24-27
Use several angle properties to
find an unknown angle measure
Level
Level 1
Review
Level 2
Focus
Period:
Date:
Section 1.4: Angle Measure (PA)
Objective
Students will be able to solve linear equations.
Students will be able to define and model ray, opposite rays, angle, protractor,
degree, acute angle, obtuse angle, right angle and straight angle.
Students will be able to name and/or use correct symbolic notational
conventions.
Extension: PPF 24-27
Use several angle properties to
find an unknown angle measure
Students will be able to measure and classify angles.
CCSS
GG.CO.1 Know precise definitions
of angle, circle, perpendicular line,
parallel line, and line segment, base
on undefined notions of point, line,
distance along a line, and distance
around a circular arc.
Level 3
Extension
Level 4
Extension
Students will be able to find missing angle measures arithmetically and
algebraically given one pair of congruent angles
Students will be able to find missing angle measures arithmetically and
algebraically given multiple pairs of congruent angles
Level 1:
Practice:
Solve each equation.
1.
y
 3  4
4
2.
3w  2  w  4
3.  6 y  3  3  6 y
Assignment 1.4
Level 1
Solving Linear
Equations
Worksheet
4.
2
3
x4 x2
3
5
5. 8(2 f  2)  7(3 f  2)
1
6. (5 x  8)  (2 x  9)  38
Level 2:
Vocabulary Term
Ray
Practice:
Definition/Description
Model
Assignment 1.4
Level 2
Page 33 #1-8
Page 34 #12-33
Opposite rays
Angle

Sides

Vertex

Interior

Exterior
Right angle
Acute angle
Obtuse angle
Straight angle
Congruent angle
Angle bisector
2
You can name an angle by
 Its vertex ___________
(You can name an angle with a single letter only when
______________________________________________
_______________________________________________)
 A point on each ray and the vertex ___________
 A number __________
Examples:
Refer to the diagram to the right.
1. Name all angles that have R as a vertex.
2. Name the sides of  1.
Refer to the diagram to the right.
3. Name the vertex of  4.
4. Name the sides of  BDC.
5. Write another name for  DBC.
Find the measure of each angle to the nearest degree.
6.
7.
Draw an angle with the given measurement.
7. 70
9. 120
3
Level 3:
Practice:
Find the measure of missing angle.
1.
mx  ______
3. EP is an angle bisector and mDEC  36
Find m2.
2. If m1  m2 and m1  25 ,
find m1  .
4. PQ is an angle bisector and mSQR  36
Find m1
5. AB bisects <CAD. If m1 = 5x – 17 and m2 = 3x + 13, find the value of x and mCAD.
6. MP bisects <BMS. If mBMP = 2x + 9 and mBMS = 7x – 3, find the value of x and mPMS
4
Assignment 1.4
Level 3
Worksheet
Level 4
Practice:
Assignment 1.4
Level 4
Page 34 #34-43,
50
5
6