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The following three terms are used in geometry: Corollary Proof Axiom Write each of these terms in the table below to match each term to its description - Junior Cycle Mathematics - Question 9 - 2017

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Question 9

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The following three terms are used in geometry: Corollary Proof Axiom Write each of these terms in the table below to match each term to its description. A st... show full transcript

Worked Solution & Example Answer:The following three terms are used in geometry: Corollary Proof Axiom Write each of these terms in the table below to match each term to its description - Junior Cycle Mathematics - Question 9 - 2017

Step 1

A statement that is accepted without proof.

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Answer

Axiom

Step 2

A statement that follows easily from a previous statement.

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Answer

Corollary

Step 3

An argument showing that a statement must be true.

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Answer

Proof

Step 4

If a shape has four right angles, then

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it must be a square.

Step 5

Is the converse of Salem's statement true or false? Justify your answer.

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Answer

False.

Justification: A rectangle has four right angles but might not be a square.

Step 6

Diagram:

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Let ABCD be a parallelogram.

Step 7

Given:

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Answer

Parallelogram ABCD.

Step 8

To Prove:

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|AB| = |CD| and |BC| = |AD|.

Step 9

Construction:

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Answer

Join A to C with a line segment.

Step 10

Proof:

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Answer

  1. ∠CAB = ∠DAC and ∠ACB = ∠ADC. Reason: Alternate angle theorem.

  2. |AC| is common to both triangles.

  3. ΔACB ≅ ΔDAC by ASA.

  4. Therefore, |AB| = |CD| and |BC| = |AD|.

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