construct a fourth point D so that Triangle

Linear Algebra: A Modern Introduction
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Chapter1: Vectors
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Given triangle ABC, use the axioms to construct a fourth point D so that Triangle ABD is congruent, but not equal to Triangle ABC. State the axioms that you use in your construction. Which axiom implies that the triangle are congruent?

 

 

Here is a list of the axioms:

 

Axiom 1 (The Point-Line Incidence Axiom). A line is a set of points. Given any two different
points, there is exactly one line that contains them.
Axiom 2 (The Ruler Axiom).
1. For any two points A and B, there is a positive number
called the distance from A to B and denoted AB.
2. For each line L, there is a function ƒ that assigns a real number to each point of L in such
a way that:
(a) Different points have different numbers associated with them.
(b) Every number – positive, negative, or zero- has some point with which it is associated.
(c) If A and B are points of L, then |f(B) – f(A)| = AB, the distance from A to B. Note
that if A and B designate the same point, then AB = 0.
%3D
Axiom 3 (Pasch's Separation Axiom for a Line). Given a line L in the plane, the points in the
plane that are not on L form two non-empty sets, H1 and H2, called half-planes, so:
1. If A and B are points in the same half-plane, then AB lies wholly in that half-plane.
2. If A and B are points not in the same half-plane, then AB intersects L.
Axiom 4 (The Angle Measurement Axiom). To every angle, there corresponds a real number
between 0° and 180° called its measure or size. We denote the measure of ZBAC by MZBAC.
Axiom 5 (The Angle Construction Axiom). Let AB lie entirely on the boundary line L of some
half-plane H. For every number r where 0° <r< 180°., there is exactly one ray AC where C is
in HUL and mZCAB = r.
Axiom 6 (The Angle Addition Axiom). If D is a point in the interior of ZBAC, then MZBAC =
MZBAD + m2DAC.
%3D
Transcribed Image Text:Axiom 1 (The Point-Line Incidence Axiom). A line is a set of points. Given any two different points, there is exactly one line that contains them. Axiom 2 (The Ruler Axiom). 1. For any two points A and B, there is a positive number called the distance from A to B and denoted AB. 2. For each line L, there is a function ƒ that assigns a real number to each point of L in such a way that: (a) Different points have different numbers associated with them. (b) Every number – positive, negative, or zero- has some point with which it is associated. (c) If A and B are points of L, then |f(B) – f(A)| = AB, the distance from A to B. Note that if A and B designate the same point, then AB = 0. %3D Axiom 3 (Pasch's Separation Axiom for a Line). Given a line L in the plane, the points in the plane that are not on L form two non-empty sets, H1 and H2, called half-planes, so: 1. If A and B are points in the same half-plane, then AB lies wholly in that half-plane. 2. If A and B are points not in the same half-plane, then AB intersects L. Axiom 4 (The Angle Measurement Axiom). To every angle, there corresponds a real number between 0° and 180° called its measure or size. We denote the measure of ZBAC by MZBAC. Axiom 5 (The Angle Construction Axiom). Let AB lie entirely on the boundary line L of some half-plane H. For every number r where 0° <r< 180°., there is exactly one ray AC where C is in HUL and mZCAB = r. Axiom 6 (The Angle Addition Axiom). If D is a point in the interior of ZBAC, then MZBAC = MZBAD + m2DAC. %3D
Axiom 7 (The Supplementary Angles Axiom). If two angles are supplementary, then their mea-
sures add to 180°.
Axiom 8 (The Side-Angle-Side (SAS) Congruence Axiom). Suppose we have triangles ABC and
A'B'C", where some or all of the vertices of the second triangle might be vertices of the first
triangle as well. If
1. mZA= mZA', and
2. AB = A'B' and AC = A'C",
then the triangles are congruent and the correspondence is: A → A', B –→ B', C → C'.
Axiom 9 (Euclid's Parallel Axiom). Given a point P off a line L, there is at most one line in the
plane through P not meeting L.
Transcribed Image Text:Axiom 7 (The Supplementary Angles Axiom). If two angles are supplementary, then their mea- sures add to 180°. Axiom 8 (The Side-Angle-Side (SAS) Congruence Axiom). Suppose we have triangles ABC and A'B'C", where some or all of the vertices of the second triangle might be vertices of the first triangle as well. If 1. mZA= mZA', and 2. AB = A'B' and AC = A'C", then the triangles are congruent and the correspondence is: A → A', B –→ B', C → C'. Axiom 9 (Euclid's Parallel Axiom). Given a point P off a line L, there is at most one line in the plane through P not meeting L.
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