ACT Math 1.2 Plane Geometry
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ACT Math: Plane Geometry Drill 1, Problem 2. In the following diagram, what does Angle 2 measure?
| ACT Math | Plane Geometry |
| ACT Mathematics | Plane Geometry |
| Angles | Angle Congruence Angle Measures |
| Congruence | Understand congruence in terms of rigid motion |
| Foreign Language | Arabic Subtitled Chinese Subtitled Korean Subtitled Spanish Subtitled |
| Geometry | Angles Congruence Understand congruence in terms of rigid motions |
| Language | English Language |
| Plane Geometry | Parallel and perpendicular lines Properties of plane figures The concept of proof and proof techniques |
| Product Type | ACT Math |
Transcript
OK so what is this question asking?
Yeah -- line D... and the measurement of Angle 4... are total decoys.
All we need to recognize is that, because C is perpendicular to A...
...All of the angles located at the intersection of those two lines will be 90 degrees.
In fact, that little square thingy tells us the same thing... that we're dealing with right angles.
So our answer is C.