Geometry and TrigonometryEasy–MediumAngle between two equal sides
Geometry and Trigonometry practice question
In triangle XYZ, XY = XZ, and angle Y measures 50°. What is the measure, in degrees, of angle X?
Answer: 80
Angles Y and Z are equal, so X = 180 − 100 = 80.
Common wrong answers
- If you answered 40
- 40 halves 80.
- If you answered 50
- 50 repeats angle Y.
- If you answered 130
- 130 subtracts only one 50 from 180.
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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