Geometry and TrigonometryEasy–MediumAngles on a line in a ratio
Geometry and Trigonometry practice question
Three angles that together form a straight angle measure x°, 2x° and 3x°. What is the measure, in degrees, of the largest of the three angles?
Answer: 90
x + 2x + 3x = 6x = 180, so x = 30. The largest angle is 3x = 90°.
Common wrong answers
- If you answered 30
- 30 is x, the SMALLEST angle.
- If you answered 60
- 60 is the middle angle, 2x.
- If you answered 180
- 180 is the total of all three angles.
More Geometry and Trigonometry questions
- Easy–Medium
A circle has a radius of 6. What is its area? (Use A = πr².) - Easy–Medium
A right triangle has legs of length 6 and 8. What is the length of the hypotenuse? - Easy–Medium
A circle has a radius of 5. What is its circumference? (Use C = 2πr.) - Easy–Medium
What is the midpoint of the segment joining the points (2, 3) and (8, 11)? - Easy–Medium
What is the measure, in degrees, of angle B? - Easy–Medium
What is the area, in square centimeters, of the trapezoid?
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