Wei Hao draws an angle of 105°. What type of angle is it?
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Worked Solution
Step 1: Recall the four angle types and their degree ranges.
Acute angle: greater than 0° and less than 90°.
Right angle: exactly 90°.
Obtuse angle: greater than 90° and less than 180°.
Reflex angle: greater than 180° and less than 360°.
Step 2: Compare 105° against each range.
105° > 90° and 105° < 180°, so it fits the obtuse range.
Step 3: The angle of 105° is an obtuse angle.
Answer: Obtuse angle
Correct answer: Obtuse angle
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