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Geometry Ch 4

Stepp's Prentice Hall Geometry Chapter 4 Congruent Triangles

The sum of the interior angles of any triangle is ___ 180
In a right triangle, the two acute angles are ___ complementary
An isosceles triangle has 2 congruent ____ angles base
If a triangle has a pair of twin sides, then it has a pair of twin angles
The twin sides of an isosceles triangle are called ___ legs
The other side in an isosceles triangle is calle the ___ base
The angle between the twin sides of an isosceles triangle is the ___ vertex angle
If a triangle has two congruent angles then it has ___ two congruent sides
If a triangle has two congruent sides then it has ___ two congruent angles
An equilateral triange is ___ equiangular
An equiangular triangle is ___ equilateral
Each angle in an equilateral triangle is ___ 60
The largest angle in a triangle is __ across from the largest side
The longest side of a triangle must be ___ shorter than the sum of the other two sides
The smallest side in a triangle is __ across from the smallest angle
An exterior angle is equal to ___ the sum of the two remote interior angles
SSS stands for ____ side-side- side
SAS stands for ____ side-angle- side
SAA stands for ____ side-angle- angle
ASA stands for ____ angle-side- angle
The two triange congruency shortcuts that do not work are ___ ssa and aaa
Which angle must be used to properly apply SAS? the included angle
Which side must be used in order to properly apply ASA? the side between the two angles
If you have AAA then the triangles must be __ similar ( not congruent)
CPCTC stands for ___ Corresponding Parts of Congruent Triangles are Congruent
A good technique for considering a diagram with "siamese triangles" is ___ draw them seperately
The bisector of the vertex angle of an isoscelese triangle is also the ___ to the base Perpendicular bisector
If two angles of one triangle are congruent to two angles of another triangle, then _____ the third angles are congruent
When two figures are congruent, you can move one so that _____ it fits exactly on the other one
When you name congruent polygons always list the corresponding vertices ____ in the same order
In order to use CPCTC in a proof you must first show ___ that the triangles are congruent
The side across from the 90 degree angle is the ____ hypotenuse
In order to use the HL shortcut in a proof, you must first show that the triangles are ____ right triangles
The L in HL stands for ___ Leg
The longest side in a right triangle is called the ____ hypotenuse
When you state that something is congruent to itself, the reason is ____ the reflexive property of congruence
When working with overlapping triangles it is useful to ___ redraw the triangles seperately
What is the difference between AAS and ASA? Whether or not the side is between the angles or not
Bisectors always make ___ parts twin
Base Angles are found _____ from the congruent side of an isosceles triangle across
If the hypotenuse and a leg of one right triangle are congruent to the hypotenuse and leg of another right triangle, then ___ the triangles are congruent
Why are the triangle congruency postulates and theorems called shortcuts? Because you can show congruece with less than all 6 parts of a triangle
Equilateral Triangles are also ___ isosceles
A ___ is a statement that immediately flows from a theorem corollary
Created by: criswell216