Geometrymedium · Past Paper
Find the value of x if (2x + 10) and (3x - 40) are vertically opposite angles.
A10
B30
C50
D70
✓ Correct Answer: C — 50
Vertically opposite angles are equal: 2x + 10 = 3x - 40; 10 + 40 = 3x - 2x; x = 50.
Share this question
More from Geometry
- In triangle ABC, if AD is altitude and AE is circumradius, then area is:
- Find the length of the line segment whose endpoints are (a, 0) and (0, a).
- Slope of the line 7x + 8y = 9 is:
- The point of intersection of the altitudes of a triangle is called:
- How many degrees are in one-fourth of a complete rotation?