Write a statement about the sum of the interior angles of a triangle below: The sum of all the interior angle in a triangle is 180 o <A + <B + <C = 180.

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Presentation transcript:

Write a statement about the sum of the interior angles of a triangle below: The sum of all the interior angle in a triangle is 180 o <A + <B + <C = 180 o

 If you know the measures of two angles in a triangle, you can calculate the measure of the third 60 o 70 o A B C <A + <B + <C = 180 o 60 o + 70 o + <C = 180 o 130 o + <C = 180 o <C = 180 o – 130 o <C = 50 o

 Find the measure of the missing angle 42 o 65 o

 Find the measure of the missing angle 31 o

 Find the measure of the missing angle