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Q6.

Expert-verified
Geometry
Found in: Page 206
Geometry

Geometry

Book edition Student Edition
Author(s) Ray C. Jurgensen, Richard G. Brown, John W. Jurgensen
Pages 227 pages
ISBN 9780395977279

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Short Answer

Write the reasons that justify the statements.

Given: ABCRST. Prove: localid="1637922009427" AK>RS

Statement

Proof

1. ABCRST

Given

2. AB¯RS¯, or AB=RS

Corresponding parts of congruent triangles are congruent.

3. AK=AB+BK

Segment Addition Postulate.

4. AK>AB

Property of Inequality If a=b+c and c>0 then c>0.

5. AK>RS

Property of Inequality If a=b+c and c>0 then a>c.

See the step by step solution

Step by Step Solution

Step 1. Draw the given diagram and define the congruent property of triangles

Two triangles ABC and RST as shown below are the given congruent triangles.

The corresponding parts of the congruent triangles are congruent.

Since ABCRST therefore, role="math" localid="1637922313136" AB¯RS¯, or AB=RS

Hence, the reason for 2nd statement is Corresponding parts of congruent triangles are congruent.

From Segment Addition Postulate. B is a point between A and K. Therefore, AK=AB+BK

Hence, the reason for 3rd statement is Segment Addition Postulate.

Step 2. Property of inequality

If a=b+c and c>0 then a>c.

Since AK=AB+BK therefore, AK>AB.

Hence, the answer to 4 is Property of Inequality If a=b+c and c>0 then a>c.

Step 3. Prove statement 5

Consider that

From 3rd statement;

AK=AB+BK

From 2nd statement;

AB¯RS¯, or AB=RS

Therefore, AK=RS+BK

Hence from the property of inequality, If a=b+c and c>0 then role="math" localid="1637921863353" a>c.

Therefore, AK>RS

Hence, the answer to 5 is Property of Inequality.

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