# Find the missing angle in a triangle

We use the property that the angles of a triangle add up to 180 degrees.
Step 1:
Find the given angles
Step 2:
Subtract the given angles from 180 to get the missing angle.

Worksheets to find the missing angle in a triangle

Angles of Triangles Add Up To 180 Degrees
Ex: Could a triangle have the given angle measures?
a) 115, 35, 30
b) 45, 45, 60
Angles of Triangles Add Up To 180 Degrees
Since all three angles add up to 180 degrees, you can find the missing angle by subtraction.

Angles of Triangles Add Up To 180 Degrees - Find two missing angles that are equal.
How to Find the Missing Angle in a Triangle.

How to find a missing angle in a triangle

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