Determine the size of angle ABC?
DBC = 100°
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Determine the size of angle ABC?
DBC = 100°
We can see from the diagram that angle DBC equals 100 degrees.
We can also see that the size of angle ABC is shown and equals 40 degrees.
Therefore, the answer is 40.
40
Indicates which angle is greater
Angles ABC and DBC are different angles formed by different rays. Even though they share vertex B, they have different measurements as shown in the diagram.
Look for the angle labels and degree markings in the diagram. The angle you need (ABC) should be clearly marked with its measurement.
In this problem, no calculation is needed! The diagram already shows angle ABC = 40°. Sometimes diagrams provide direct measurements rather than requiring calculations.
Look for small numbers near the angle arcs in the diagram. In this case, you should see 40 marked near angle ABC and 100 marked near angle DBC.
Some geometry problems test your ability to read diagrams accurately rather than perform complex calculations. This is an important skill in geometry!
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