Page 107 - TB_6B
P. 107
27 Interior and Exterior Angles
Find the sum of the interior angles of a triangle.
Triangle ABC is torn into 3 pieces, and the pieces are placed on a straight
line as shown below.
A
1
2 3 21 3
B
C
When the 3 angles meet at 1 vertex, what is the sum of the angles?
In the picture above, we can see that the sum of the interior angles of a
triangle is 180 .
Chat
Draw sDoEthat it passes through vertex A and is parallel to BC.
Use the picture below to show that the sum of the interior angles of a
triangle is 180 .
DAE
BC
96
Find the sum of the interior angles of a triangle.
Triangle ABC is torn into 3 pieces, and the pieces are placed on a straight
line as shown below.
A
1
2 3 21 3
B
C
When the 3 angles meet at 1 vertex, what is the sum of the angles?
In the picture above, we can see that the sum of the interior angles of a
triangle is 180 .
Chat
Draw sDoEthat it passes through vertex A and is parallel to BC.
Use the picture below to show that the sum of the interior angles of a
triangle is 180 .
DAE
BC
96
