section 4.1 congruent polygons
DESCRIPTION
Section 4.1 Congruent Polygons. How do we know if two figures are congruent?. All of the matching sides are the same All of the matching angles are the same Basically, the shapes are identical to each other. Naming two congruent shapes with a Congruence Statement. - PowerPoint PPT PresentationTRANSCRIPT
Section 4.1
Section 4.1Congruent Polygons
Section 4.1
How do we know if two figures are congruent?1. All of the matching sides are the same2. All of the matching angles are the same
Basically, the shapes are identical to each other.
Section 4.1
Naming two congruent shapes with a Congruence Statement.When stating that two shapes are congruent it is important that the letters of each shape are written in the same order.
Example:
Polygon ABCDE = Polygon __________XMLPQ
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Find the matching parts between the shapesAB = _______
<D = _______
QP = _______
<M = _______
XM
<P
DE
<B
Section 4.1
What we can determine from a congruence statement?Example:
Triangle ABC = Triangle HFGWhich Angles are congruent? Which Sides are congruent?
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What we can determine from a congruence statement.Triangle GKD = Triangle LSP
Which angles are congruent?
Which sides are congruent?
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Are the shapes below congruent?
Yes, all of the matching sides and all of the matching angles are congruent.
Section 4.1
Are the shapes below congruent?
We can not determine if the shapes are congruent because we don’t have the necessary info about the sides and angles.
Section 4.1
Write a congruence statement, if possible
Section 4.1
Write a congruence statement, if possible.
Section 4.1
Write a congruence statement, if possible
Section 4.1
Homework
P 182 ( 3 – 35 odd)