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# Geometry Ch 4

### Stepp's Prentice Hall Geometry Chapter 4 Congruent Triangles

Question | Answer |
---|---|

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