Everyday Math Grade 4 – Lesson 1.3 Part 2: Triangles Copyright © 2010 Kelly Mott
Math Boxes Lesson 1.3
Copyright © 2010 Kelly Mott Math Box 1:
Copyright © 2010 Kelly Mott Math Box 2:
Copyright © 2010 Kelly Mott Math Box 3:
Copyright © 2010 Kelly Mott Math Box 4:
Copyright © 2010 Kelly Mott Math Box 5:
Copyright © 2010 Kelly Mott REVIEW
A __________ is a location in space that is usually marked with a dot. Z 1.Line 2.Line segment 3.Point 4.Ray Copyright © 2010 Kelly Mott
A __________ is made up of a set of points and continues without end in both directions. 1.Line 2.Line segment 3.Point 4.Ray Copyright © 2010 Kelly Mott
A __________ straight path that has a starting point and goes forever in one direction. 1.Line 2.Line segment 3.Point 4.Ray Copyright © 2010 Kelly Mott
A __________ is made up of 2 points with a straight path between them. 1.Line 2.Line segment 3.Point 4.Ray Copyright © 2010 Kelly Mott
A B C Name the Angle Copyright © 2010 Kelly Mott Right Angle 90 degrees
Copyright © 2010 Kelly Mott Name the Angle Acute Angle Less than 90 degrees
Copyright © 2010 Kelly Mott Name the Angle Obtuse Angle Greater than 90 degrees and less than 180 degrees
Copyright © 2010 Kelly Mott Name the Angle Straight Angle 180 degrees
What kind of angles is this? Copyright © 2010 Kelly Mott 1.Right 2.Acute 3.Obtuse 4.Straight
What kind of angles is this? Copyright © 2010 Kelly Mott 1.Right 2.Acute 3.Obtuse 4.Straight
What kind of angles is this? Copyright © 2010 Kelly Mott 1.Right 2.Acute 3.Obtuse 4.Straight
What kind of angles is this? Copyright © 2010 Kelly Mott 1.Right 2.Acute 3.Obtuse 4.Straight
__________or ______________________________ Copyright © 2010 Kelly Mott Name the Line, Line Segment, or Ray XYFG
__________or _________ Copyright © 2010 Kelly Mott Name the Line, Line Segment, or Ray LMN QR
Names: 1.___________________ 2.___________________ 3.___________________ B A C Name the Angles E D F Names: 1.___________________ 2.___________________ 3.___________________ J K L Copyright © 2010 Kelly Mott
How did you do? Copyright © 2010 Kelly Mott
Lesson 1.3 Part 2 Skill: Triangles
Part 1: What are triangles? Copyright © 2010 Kelly Mott
A triangle is a closed figure that has _____ angles. Label the angles above. Copyright © 2010 Kelly Mott What is an triangle?
A triangle has 3 vertices: _______ _______ _______ A triangle has 3 sides: _______ _______ _______ A triangle has 3 angles: _______ _______ _______ Copyright © 2010 Kelly Mott What is an triangle? A BC
Part 2: Naming Triangles Copyright © 2010 Kelly Mott
Triangles have three letter names. You name a triangle by listing the letter names for the vertices in order. This triangle has 6 possible names: _______ _______ _______ _______ _______ _______ Copyright © 2010 Kelly Mott How are triangles named? X YZ
Let’s try another. This triangle has 6 possible names: _______ _______ _______ _______ _______ _______ Copyright © 2010 Kelly Mott How are triangles named? D E F
Let’s try one more. This triangle has 6 possible names: _______ _______ _______ _______ _______ _______ Copyright © 2010 Kelly Mott How are triangles named? P QR
Part 2: Types of Triangles Copyright © 2010 Kelly Mott
Types of Triangles Copyright © 2010 Kelly Mott
This is an equilateral triangle All _____ sides are the same length. The angles of an equilateral triangle all measure ____ degrees. Equilateral Triangle Copyright © 2010 Kelly Mott
j Circle the Equilateral Triangles Copyright © 2010 Kelly Mott
This is an isosceles triangle _____ sides are the same length and _____ angles are the same. Isosceles Triangle Copyright © 2010 Kelly Mott
j Circle the Isosceles Triangles Copyright © 2010 Kelly Mott
These are scalene triangles. _____ sides are the same length. Scalene Triangle Copyright © 2010 Kelly Mott
j Circle the Scalene Triangles Copyright © 2010 Kelly Mott
These are right triangles. One angle measures _____ degrees. Right Triangle Copyright © 2010 Kelly Mott
A right triangle can sometimes be a _________________ triangle. Right Triangle Copyright © 2010 Kelly Mott
j Circle the Right Triangles Copyright © 2010 Kelly Mott
Part 3: Review & Matching Copyright © 2010 Kelly Mott
Polygons Copyright © 2010 Kelly Mott Isosceles Triangle
Polygons Copyright © 2010 Kelly Mott Equilateral Triangle
Polygons Copyright © 2010 Kelly Mott Scalene Triangle
Polygons Copyright © 2010 Kelly Mott Right Triangle
1.Equilateral 2.Isosceles 3.Scalene 4.Right Match the Triangles Copyright © 2010 Kelly Mott
Part 4: Turning Point Review Copyright © 2010 Kelly Mott
Name the triangle. 1.Equilateral 2.Isosceles 3.Scalene 4.Right Copyright © 2010 Kelly Mott
Name the triangle. 1.Equilateral 2.Isosceles 3.Scalene 4.Right Copyright © 2010 Kelly Mott
Name the triangle. 1.Equilateral 2.Isosceles 3.Scalene 4.Right Copyright © 2010 Kelly Mott
Name the triangles. 1.Equilateral 2.Isosceles 3.Right Copyright © 2010 Kelly Mott
Name these triangles. 1.Equilateral 2.Isosceles 3.Scalene 4.Right Copyright © 2010 Kelly Mott
Name these triangles. 1.Equilateral 2.Isosceles 3.Scalene 4.Right Copyright © 2010 Kelly Mott
Name these triangles. 1.Equilateral 2.Isosceles 3.Scalene Copyright © 2010 Kelly Mott
Part 5: BRAIN POP - TRIANGLES Copyright © 2010 Kelly Mott
BRAIN POP Video: eometryandmeasurement/typeso ftriangles/ Quiz: eometryandmeasurement/typeso ftriangles/quiz/ Copyright © 20010Kelly Mott
How did you do? Copyright © 2010 Kelly Mott
HOMEWORK Poster Showing Types of Triangles Copyright © 20010Kelly Mott
Copyright © 2010 Kelly Mott HOMEWORK : TRIANGLE POSTER Isoceles- 2 sides equal Scalene- no sides equal Right- 1 right angle Equilateral- all sides equal
Does this make sense? Copyright © 2010 Kelly Mott