Practice30Create account

In a triangle, an exterior angle measures 120° and one of its two interior opposite angles is 45°. Find the other interior opposite angle (in degrees).

Competition practiceGeometry
  • A150
  • B83
  • C75
  • D67

Step-by-Step Solution

An exterior angle equals the sum of the two interior opposite angles: 120 − 45 = 75°.
Answer: C) 75

Master this topic in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Geometry practice questions

More Geometry practice

Two triangles have two sides and the angle included between those sides equal. By which…How many lines of symmetry does a regular pentagon have?A transversal cuts two parallel lines. If one interior angle is 65°, what is the measure…An exterior angle of a triangle measures 110° and one of its interior opposite angles is…The angles of a quadrilateral are in the ratio 1 : 2 : 3 : 4. The largest angle is: