Which of the following sets of angles can be used to construct a triangle?
Table of contents
- 0. Review of College Algebra4h 43m
- 1. Measuring Angles40m
- 2. Trigonometric Functions on Right Triangles2h 5m
- 3. Unit Circle1h 19m
- 4. Graphing Trigonometric Functions1h 19m
- 5. Inverse Trigonometric Functions and Basic Trigonometric Equations1h 41m
- 6. Trigonometric Identities and More Equations2h 34m
- 7. Non-Right Triangles1h 38m
- 8. Vectors2h 25m
- 9. Polar Equations2h 5m
- 10. Parametric Equations1h 6m
- 11. Graphing Complex Numbers1h 7m
- OLD 1. Angles and the Trigonometric Functions Coming soon
- OLD 2. Trigonometric Functions graphs, Inverse Trigonometric Functions Coming soon
- OLD 3. Trigonometric Identities and Equations Coming soon
- OLD 4. Laws of Sines, Cosines and Vectors Coming soon
- OLD 5. Complex Numbers, Polar Coordinates and Parametric Equations Coming soon
- NEW (not used) 7. Laws of Sines, Cosines and Vectors Coming soon
- NEW (not used) 8. Vectors Coming soon
- NEW(not used) 9. Polar equations Coming soon
- NEW (not used) 11. Graphing Complex Numbers Coming soon
7. Non-Right Triangles
Law of Sines
Multiple Choice
Which pair of triangles can be proven congruent by the (Side-Angle-Side) Congruence Theorem?
A
Two triangles with two sides and the included equal in each triangle
B
Two triangles with two and a non-included equal in each triangle
C
Two triangles with all three equal in each triangle
D
Two triangles with all three equal in each triangle
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Verified step by step guidance1
Recall the SAS (Side-Angle-Side) Congruence Theorem states that two triangles are congruent if two sides and the included angle (the angle between those two sides) in one triangle are congruent to two sides and the included angle in another triangle.
Identify what 'included angle' means: it is the angle formed between the two given sides, not an angle that is separate or opposite to them.
Examine each option to see if it matches the SAS criteria:
- Option 1: Two triangles with two sides and the included angle equal in each triangle. This matches the SAS theorem exactly.
- Other options involve either two angles and a non-included side, all three sides, or all three angles, which correspond to different congruence criteria (ASA, SSS, AAA) and not SAS.
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