Stepp's Prentice Hall Geometry Chapter 4 Congruent Triangles
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each of the black spaces below before clicking
on it to display the answer.
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| The sum of the interior angles of any triangle is ___ | 180
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| In a right triangle, the two acute angles are ___ | complementary
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| An isosceles triangle has 2 congruent ____ angles | base
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| If a triangle has a pair of twin sides, then it has a | pair of twin angles
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| The twin sides of an isosceles triangle are called ___ | legs
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| The other side in an isosceles triangle is calle the ___ | base
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| The angle between the twin sides of an isosceles triangle is the ___ | vertex angle
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| If a triangle has two congruent angles then it has ___ | two congruent sides
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| If a triangle has two congruent sides then it has ___ | two congruent angles
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| An equilateral triange is ___ | equiangular
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| An equiangular triangle is ___ | equilateral
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| Each angle in an equilateral triangle is ___ | 60
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| The largest angle in a triangle is __ | across from the largest side
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| The longest side of a triangle must be ___ | shorter than the sum of the other two sides
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| The smallest side in a triangle is __ | across from the smallest angle
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| An exterior angle is equal to ___ | the sum of the two remote interior angles
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| SSS stands for ____ | side-side- side
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| SAS stands for ____ | side-angle- side
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| SAA stands for ____ | side-angle- angle
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| ASA stands for ____ | angle-side- angle
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| The two triange congruency shortcuts that do not work are ___ | ssa and aaa
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| Which angle must be used to properly apply SAS? | the included angle
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| Which side must be used in order to properly apply ASA? | the side between the two angles
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| If you have AAA then the triangles must be __ | similar ( not congruent)
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| CPCTC stands for ___ | Corresponding Parts of Congruent Triangles are Congruent
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| A good technique for considering a diagram with "siamese triangles" is ___ | draw them seperately
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| The bisector of the vertex angle of an isoscelese triangle is also the ___ to the base | Perpendicular bisector
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| If two angles of one triangle are congruent to two angles of another triangle, then _____ | the third angles are congruent
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| When two figures are congruent, you can move one so that _____ | it fits exactly on the other one
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| When you name congruent polygons always list the corresponding vertices ____ | in the same order
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| In order to use CPCTC in a proof you must first show ___ | that the triangles are congruent
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| The side across from the 90 degree angle is the ____ | hypotenuse
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| In order to use the HL shortcut in a proof, you must first show that the triangles are ____ | right triangles
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| The L in HL stands for ___ | Leg
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| The longest side in a right triangle is called the ____ | hypotenuse
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| When you state that something is congruent to itself, the reason is ____ | the reflexive property of congruence
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| When working with overlapping triangles it is useful to ___ | redraw the triangles seperately
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| What is the difference between AAS and ASA? | Whether or not the side is between the angles or not
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| Bisectors always make ___ parts | twin
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| Base Angles are found _____ from the congruent side of an isosceles triangle | across
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| 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
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| Why are the triangle congruency postulates and theorems called shortcuts? | Because you can show congruece with less than all 6 parts of a triangle
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| Equilateral Triangles are also ___ | isosceles
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| A ___ is a statement that immediately flows from a theorem | corollary
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