Geometry and TrigonometryEasyThird angle of a triangle
Geometry and Trigonometry practice question
Two angles of a triangle measure 60° and 70°. What is the measure, in degrees, of the third angle?
Answer: 50
The angles of a triangle add to 180: 180 − 60 − 70 = 50.
Common wrong answers
- If you answered 10
- 10 is 70 − 60.
- If you answered 130
- 130 is 60 + 70, the sum of the two given angles.
- If you answered 230
- 230 comes from 360 − 130, using a quadrilateral's angle sum.
More Geometry and Trigonometry questions
- Easy
Two angles of a triangle measure 40° and 75°. What is the measure of the third angle? - Easy
A triangle has a base of 10 and a height of 6. What is its area? - Easy
In a 30°-60°-90° right triangle, the shorter leg (opposite the 30° angle) has length 6. What is the length of … - Easy
A rectangle has a length of 8 and a width of 3. What is its perimeter? - Easy
A closed rectangular box has a length of 5 inches, a width of 4 inches, and a height of 3 inches. What is the … - Easy
In the xy-plane, a circle has center (2, −5) and radius 3. Which equation represents this circle?
Not affiliated with the College Board. SAT is a trademark of the College Board.