Page 138 - Math Smart - 7
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^ RECALL
Identify the types of triangles.
a) A b)
Example 2
Calculate the value of o.
o° + 8r+ 56°= 180° {Z sum of A)
0° = 180°-81°-56°
= 43°
The sum of the interior 0 = 43
angles of a triangle is 180°.
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Understanding
Q Calculate the unknown angle(s) in each diagram.
a) b) c)
d) e) f)
Angles and Their Properties
