Consider two lines, line A and line B, that intersect at a point O, forming angles as shown below: If angle AOB measures 50 degrees, what is the measure of angle COD, which is the vertical angle to angle AOB?

Exam

ISEE Middle Level

Section

Difficulty

Mathematics Achievement

Vertical Angles from Intersecting Lines

Medium Geometry Lines And Angles

Consider two lines, line A and line B, that intersect at a point O, forming angles as shown below:

Lines A and B intersecting at point O

If angle AOB measures 50 degrees, what is the measure of angle COD, which is the vertical angle to angle AOB?

50 degrees

130 degrees

40 degrees

90 degrees

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