Mathematics
Geometry
A reflex angle is:
A. Two endpoints
B. One endpoint
C. Greater than 180° and less than 360°
D. 180°
Correct Answer: C
Correct basic geometry fact: Greater than 180° and less than 360°.
Mathematics
Geometry
Coplanar points lie:
A. Two endpoints
B. 180°
C. In the same plane
D. One endpoint
Correct Answer: C
Correct basic geometry fact: In the same plane.
Mathematics
Geometry
A point has:
A. 180°
B. Position but no dimensions
C. One endpoint
D. Two endpoints
Correct Answer: B
Correct basic geometry fact: Position but no dimensions.
Mathematics
Geometry
The common endpoint of two rays is the:
A. Two endpoints
B. 180°
C. One endpoint
D. Vertex
Correct Answer: D
Correct basic geometry fact: Vertex.
Mathematics
Geometry
An angle bisector creates:
A. 180°
B. Two endpoints
C. Two equal angles
D. One endpoint
Correct Answer: C
Correct basic geometry fact: Two equal angles.
Mathematics
Geometry
Parallel lines in a plane:
A. Two endpoints
B. Never meet
C. 180°
D. One endpoint
Correct Answer: B
Correct basic geometry fact: Never meet.
Mathematics
Geometry
Perpendicular lines meet at:
A. 180°
B. Two endpoints
C. One endpoint
D. 90°
Correct Answer: D
Correct basic geometry fact: 90°.
Mathematics
Geometry
A line segment has:
A. None of these
B. 180°
C. One endpoint
D. Two endpoints
Correct Answer: D
Correct basic geometry fact: Two endpoints.
Mathematics
Geometry
A ray has:
A. One endpoint
B. Two endpoints
C. 180°
D. None of these
Correct Answer: A
Correct basic geometry fact: One endpoint.
Mathematics
Geometry
A line has:
A. One endpoint
B. Two endpoints
C. 180°
D. No endpoints
Correct Answer: D
Correct basic geometry fact: No endpoints.
Mathematics
Geometry
On the same side of a transversal across parallel lines, one interior angle is 120°. Find the co-interior angle.<br/><svg xmlns="http://www.w3.org/2000/svg" width="260" height="180" viewBox="0 0 260 180" role="img"><line x1="25" y1="48" x2="235" y2="48" stroke="#1f2937" stroke-width="2"/><line x1="25" y1="132" x2="235" y2="132" stroke="#1f2937" stroke-width="2"/><line x1="75" y1="15" x2="170" y2="165" stroke="#2563eb" stroke-width="2.5"/><text x="95" y="42" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠1</text><text x="144" y="125" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠2</text><text x="25" y="23" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">ℓ ∥ m</text></svg>
A. 76°
B. 68°
C. 60°
D. 52°
Correct Answer: C
Co-interior angles sum to 180°: 180°−120°=60°.
Mathematics
Geometry
On the same side of a transversal across parallel lines, one interior angle is 114°. Find the co-interior angle.<br/><svg xmlns="http://www.w3.org/2000/svg" width="260" height="180" viewBox="0 0 260 180" role="img"><line x1="25" y1="48" x2="235" y2="48" stroke="#1f2937" stroke-width="2"/><line x1="25" y1="132" x2="235" y2="132" stroke="#1f2937" stroke-width="2"/><line x1="75" y1="15" x2="170" y2="165" stroke="#2563eb" stroke-width="2.5"/><text x="95" y="42" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠1</text><text x="144" y="125" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠2</text><text x="25" y="23" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">ℓ ∥ m</text></svg>
A. 66°
B. 74°
C. 82°
D. 58°
Correct Answer: A
Co-interior angles sum to 180°: 180°−114°=66°.
Mathematics
Geometry
On the same side of a transversal across parallel lines, one interior angle is 108°. Find the co-interior angle.<br/><svg xmlns="http://www.w3.org/2000/svg" width="260" height="180" viewBox="0 0 260 180" role="img"><line x1="25" y1="48" x2="235" y2="48" stroke="#1f2937" stroke-width="2"/><line x1="25" y1="132" x2="235" y2="132" stroke="#1f2937" stroke-width="2"/><line x1="75" y1="15" x2="170" y2="165" stroke="#2563eb" stroke-width="2.5"/><text x="95" y="42" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠1</text><text x="144" y="125" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠2</text><text x="25" y="23" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">ℓ ∥ m</text></svg>
A. 64°
B. 88°
C. 72°
D. 80°
Correct Answer: C
Co-interior angles sum to 180°: 180°−108°=72°.
Mathematics
Geometry
On the same side of a transversal across parallel lines, one interior angle is 102°. Find the co-interior angle.<br/><svg xmlns="http://www.w3.org/2000/svg" width="260" height="180" viewBox="0 0 260 180" role="img"><line x1="25" y1="48" x2="235" y2="48" stroke="#1f2937" stroke-width="2"/><line x1="25" y1="132" x2="235" y2="132" stroke="#1f2937" stroke-width="2"/><line x1="75" y1="15" x2="170" y2="165" stroke="#2563eb" stroke-width="2.5"/><text x="95" y="42" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠1</text><text x="144" y="125" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠2</text><text x="25" y="23" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">ℓ ∥ m</text></svg>
A. 94°
B. 70°
C. 78°
D. 86°
Correct Answer: C
Co-interior angles sum to 180°: 180°−102°=78°.
Mathematics
Geometry
On the same side of a transversal across parallel lines, one interior angle is 96°. Find the co-interior angle.<br/><svg xmlns="http://www.w3.org/2000/svg" width="260" height="180" viewBox="0 0 260 180" role="img"><line x1="25" y1="48" x2="235" y2="48" stroke="#1f2937" stroke-width="2"/><line x1="25" y1="132" x2="235" y2="132" stroke="#1f2937" stroke-width="2"/><line x1="75" y1="15" x2="170" y2="165" stroke="#2563eb" stroke-width="2.5"/><text x="95" y="42" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠1</text><text x="144" y="125" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠2</text><text x="25" y="23" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">ℓ ∥ m</text></svg>
A. 92°
B. 76°
C. 84°
D. 100°
Correct Answer: C
Co-interior angles sum to 180°: 180°−96°=84°.
Mathematics
Geometry
On the same side of a transversal across parallel lines, one interior angle is 84°. Find the co-interior angle.<br/><svg xmlns="http://www.w3.org/2000/svg" width="260" height="180" viewBox="0 0 260 180" role="img"><line x1="25" y1="48" x2="235" y2="48" stroke="#1f2937" stroke-width="2"/><line x1="25" y1="132" x2="235" y2="132" stroke="#1f2937" stroke-width="2"/><line x1="75" y1="15" x2="170" y2="165" stroke="#2563eb" stroke-width="2.5"/><text x="95" y="42" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠1</text><text x="144" y="125" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠2</text><text x="25" y="23" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">ℓ ∥ m</text></svg>
A. 96°
B. 104°
C. 112°
D. 88°
Correct Answer: A
Co-interior angles sum to 180°: 180°−84°=96°.
Mathematics
Geometry
On the same side of a transversal across parallel lines, one interior angle is 78°. Find the co-interior angle.<br/><svg xmlns="http://www.w3.org/2000/svg" width="260" height="180" viewBox="0 0 260 180" role="img"><line x1="25" y1="48" x2="235" y2="48" stroke="#1f2937" stroke-width="2"/><line x1="25" y1="132" x2="235" y2="132" stroke="#1f2937" stroke-width="2"/><line x1="75" y1="15" x2="170" y2="165" stroke="#2563eb" stroke-width="2.5"/><text x="95" y="42" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠1</text><text x="144" y="125" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠2</text><text x="25" y="23" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">ℓ ∥ m</text></svg>
A. 102°
B. 94°
C. 118°
D. 110°
Correct Answer: A
Co-interior angles sum to 180°: 180°−78°=102°.
Mathematics
Geometry
On the same side of a transversal across parallel lines, one interior angle is 72°. Find the co-interior angle.<br/><svg xmlns="http://www.w3.org/2000/svg" width="260" height="180" viewBox="0 0 260 180" role="img"><line x1="25" y1="48" x2="235" y2="48" stroke="#1f2937" stroke-width="2"/><line x1="25" y1="132" x2="235" y2="132" stroke="#1f2937" stroke-width="2"/><line x1="75" y1="15" x2="170" y2="165" stroke="#2563eb" stroke-width="2.5"/><text x="95" y="42" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠1</text><text x="144" y="125" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠2</text><text x="25" y="23" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">ℓ ∥ m</text></svg>
A. 108°
B. 124°
C. 100°
D. 116°
Correct Answer: A
Co-interior angles sum to 180°: 180°−72°=108°.
Mathematics
Geometry
On the same side of a transversal across parallel lines, one interior angle is 66°. Find the co-interior angle.<br/><svg xmlns="http://www.w3.org/2000/svg" width="260" height="180" viewBox="0 0 260 180" role="img"><line x1="25" y1="48" x2="235" y2="48" stroke="#1f2937" stroke-width="2"/><line x1="25" y1="132" x2="235" y2="132" stroke="#1f2937" stroke-width="2"/><line x1="75" y1="15" x2="170" y2="165" stroke="#2563eb" stroke-width="2.5"/><text x="95" y="42" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠1</text><text x="144" y="125" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠2</text><text x="25" y="23" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">ℓ ∥ m</text></svg>
A. 114°
B. 130°
C. 106°
D. 122°
Correct Answer: A
Co-interior angles sum to 180°: 180°−66°=114°.
Mathematics
Geometry
On the same side of a transversal across parallel lines, one interior angle is 60°. Find the co-interior angle.<br/><svg xmlns="http://www.w3.org/2000/svg" width="260" height="180" viewBox="0 0 260 180" role="img"><line x1="25" y1="48" x2="235" y2="48" stroke="#1f2937" stroke-width="2"/><line x1="25" y1="132" x2="235" y2="132" stroke="#1f2937" stroke-width="2"/><line x1="75" y1="15" x2="170" y2="165" stroke="#2563eb" stroke-width="2.5"/><text x="95" y="42" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠1</text><text x="144" y="125" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">∠2</text><text x="25" y="23" style="font-family:Arial,sans-serif;font-size:13px;fill:#111;">ℓ ∥ m</text></svg>
A. 120°
B. 112°
C. 136°
D. 128°
Correct Answer: A
Co-interior angles sum to 180°: 180°−60°=120°.