Exam 3: Triangles
Exam 1: Line and Angle Relationships13 Questions
Exam 2: Parallel Lines13 Questions
Exam 3: Triangles16 Questions
Exam 4: Quadrilaterals14 Questions
Exam 5: Similar Triangles12 Questions
Exam 6: Circles10 Questions
Exam 7: Locus and Concurrence4 Questions
Exam 8: Areas of Polygons and Circles5 Questions
Exam 9: Surfaces and Solids4 Questions
Exam 10: Analytical Geometry8 Questions
Exam 11: Introduction to Trigonometry4 Questions
Exam 12: Geometry Problems: Complementary Angles, Collinear Points, and Similar Triangles916 Questions
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-Provide the missing reasons for the following proof.
Given: M is the midpoint of
; also,
Prove:
S1. M is the midpoint of
R1.
S2.
R2.
S3.
R3.
S4.
R4.
S5.
R5.









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Correct Answer:
R1. Given
R2. Definition of midpoint
R3. Given
R4. Identity
R5. SSS
-Provide missing statements for the following proof.
Given:
and
Prove:
S1. R1. Given
S2. R2. Vertical angles are congruent.
S3. R3. SAS




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Correct Answer:
S1. and
S2.
S3.
-Provide all statements and all reasons for this proof.
Given:
with
;
with
Prove: 






Free
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Correct Answer:
S1. with
R1. Given
S2. with
R2. Given
S3. R3. Identity
S4. R4. SSS
-Provide mssing statements and missing reasons for the proof of the theorem,
"Corresponding altitudes of congruent triangles are congruent."
Given:
;
and
Prove:
S1.
R1.
S2.
and
R2.
S3. R3. Given
S4.
and
are rt.
R4.
S5. R5. All right angles are congruent.
S6.
R6.
S7. R7.












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-Provide missing reasons for this proof.
Given:
and
Prove:
bisects
S1.
and
R1.
S2.
R2.
S3.
R3.
S4,
R4.
S5.
bisects
R5.












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-In the figure provided,
. Explain why it is necessary that
is also
congruent to 




(Essay)
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-Provide missing statements and missing reasons for the proof of the theorem,
"If two sides of a triangle are congruent, then the angles opposite those sides are
also congruent."
Given:
with
Prove:
S1. R1.
S2. Draw the angle bisector for
R2. Every angle has exactly one angle-bisector.
S3.
R3.
S4. R4.






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-Use the given drawing and information to prove Theorem 3.1.1 (AAS). Provide all
statements and reasons.
Given:
,
, and
Prove: 





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-Explain why the angle-bisector method is justified. Consider that the given angle,
,
is to be bisected by the constructed ray,
.



(Essay)
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-Supply missing statements and missing reasons for the following proof.
Given:
and
Prove:
S1. R1.
S2.
R2. If the measure of one
of a
is greater than the measure of a
2nd
of the
, then the side opposite the larger
is longer than
the side opposite the smaller
.
S3. R3.











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-Provide the missing statements and missing reasons for the following proof.
Given:
and V is the midpoint of
Prove:
S1.
R1.
S2.
R2.
S3. R3. Given
S4.
R4.
S5. R5. Identity
S6.
R6.
S7. R7.








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-Provide missing statements for the following proof.
Given:
and
are right angles;
Prove:
S1. R1. Given
S2. R2. All right angles are congruent.
S3. R3. Identity
S4. R4. SAS
S5. R5. CPCTC





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-In the following problem, explain (prove) why the conclusion is valid..
Given: Quadrilateral
with diagonal
;
and
are right angles
Prove: 






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-Supply missing statements and missing reasons for the following proof.
Given:
;
Prove:
S1.
;
R1.
S2. R2. Identity
S3. R3.






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-Provide missing statements and missing reasons for the following proof.
Given:
; M is the midpoint of
and N is the midpoint of
Prove:
S1.
R1.
S2.
,
, and
R2.
S3. R3. Given
S4.
R4. The midpoints of two congruent line segments
divide the segments into 4 congruent segments.
S5.
R5.
S6. R6.











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-Supply missing statements and missing reasons for the following proof.
Given:
;
and
Prove:
is an isosceles triangle
S1.
;
R1.
S2.
R2.
S3. R3. If 2 angles of a triangle are congruent, the sides
opposite these angles are congruent.
S4.
R4.
S5. R5. CPCTC
S6.
is an isosceles triangle R6.










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