Foundation Mathematics Primary 6 Angles

Three angles meet at a point on a straight line. They measure 50°, x° and 75°. Find the value of x.

A 55°
B 105°
C 125°
D 130°
Show Worked Solution

Worked Solution

Step 1: Angles on a straight line add up to 180°. Step 2: 50° + x° + 75° = 180°. Step 3: 50° + 75° = 125°. Step 4: x = 180° − 125° = 55°. Answer: 55°

Correct answer: 55°

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