Parallel Lines & Transversals. Transversal A line, ray, or segment that intersects 2 or more COPLANAR lines, rays, or segments.

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Parallel Lines & Transversals
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Presentation transcript:

Parallel Lines & Transversals

Transversal A line, ray, or segment that intersects 2 or more COPLANAR lines, rays, or segments.

interior INTERIOR –The space INSIDE the 2 lines EXTERIOR -The space OUTSIDE the 2 lines exterior

Special Angle Relationships Interior Angles Alternate Interior Angles –

Special Angle Relationships Same-Side Interior Angles –

Special Angle Relationships Exterior Angles Alternate Exterior Angles –

Special Angle Relationships Same-Side Exterior Angles –

Special Angle Relationships Corresponding Angles:

Special Angle Relationships Vertical Angles:

Special Angle Relationships Supplementary Angles:

Special Angle Relationships Adjacent Angles –

Parallel Lines & Transversals DAY #2

Special Angle Relationships WHEN THE LINES ARE PARALLEL ♥Alternate Interior Angles are CONGRUENT ♥Alternate Exterior Angles are CONGRUENT If the lines are not parallel, these angle relationships DO NOT EXIST.

Special Angle Relationships WHEN THE LINES ARE PARALLEL ♥Same Side Interior Angles are SUPPLEMENTARY ♥Same Side Exterior Angles are SUPPLEMENTARY ♥Supplementary Angles are SUPPLEMENTARY If the lines are not parallel, these angle relationships DO NOT EXIST.

Special Angle Relationships WHEN THE LINES ARE PARALLEL ♥Corresponding Angles are CONGRUENT ♥Vertical Angles are CONGRUENT If the lines are not parallel, these angle relationships DO NOT EXIST.

Let’s Practice m<1=120° Find all the remaining angle measures ° 120°

Another practice problem Find all the missing angle measures. 137°

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