Chapter 4 Geometry Quiz

Front 1

Congruent Polgons

Back 1

have congruent corresponding parts (sides and angles) When you name them you must list corresponding vertices in the same order

Front 2

Third Angle Theorem (theorem 4-1)

Back 2

If two angles are congruent to two angles of another triangle, then the third angles are congruent.

Front 3

Side-Side-Side (sss) Postulate (Postulate 4-1)

Back 3

If the three sides of one triangle are congruent to the three sides of another triangle, then the two triangles are congruent.

Front 4

Side-Angle-Side (SAS) Postulate (Postulate 4-2)

Back 4

If two sides and the included angle of one triangle are congruent to two sides and the congruent angle of another triangle, then the two triangles are congruent

Front 5

Angle-Side_Angle (ASA) Postulate (postulate 4-3)

Back 5

If two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the two triangles are congruent.

Front 6

Angle-Angle-Sie (AAS) theorem (theorem 4-2)

Back 6

If two angles and a nonincluded side of one triangle are congruent to two angles and the corresponding nonincluded side of one triangle, then the triangles are congruent.

Front 7

Isoceles Triangle

Back 7

a triangle that has at two congruent sides (two sides are equal in length)

Front 8

Equalateral triangle

Back 8

a triangle with three congruent sides (all sides are equal in length)

Front 9

Scalene Traingle

Back 9

a triangle with no congruent sides (all sides have different lengths)

Front 10

leg (isosceles triangle)

Back 10

congruent sides of an isosceles triangle

Front 11

vertex (isoceles triangle)

Back 11

in an isosceles triangle the angle formed between two congruent legs

Front 12

base (isocceles trianlge)

Back 12

the third side of an isosceles triangle (the non-congruent side)

Front 13

base angle (isosceles trianlge)

Back 13

_____ the angles in an isosceles triangle that are not the vertex (the two angles touching the base)

Front 14

Isoceles triangle theorem (theorem 4-3)

Back 14

If two sides of a triangle are congruent, then the angles opposite those sides are congruent.

Front 15

Converse of the Isoceles triangle theorem (theorem 4-4)

Back 15

If two angles of a triangle are congruent, then the sides opposite those angles are congruent.

Front 16

Theorem 4-5

Back 16

If a line bisects the vertex angle of an isosceles triangle, then the line is also the perpendicular bisector of the base.

Front 17

corollary

Back 17

a theorem that can be proved easily using another theorem

Front 18

Corollary to the Isosceles triangle Theorem (theorem 4-3)

Back 18

If a triangle is equilateral, then the triangle is equiangular

Front 19

Corollary to the converse of the isosceles triangle theorem (theorem 4-4)

Back 19

If a triangle is equangular, then the triangle is equilateral

Front 20

right triangle

Back 20

a triangle containing a right (90 degree) angle

Front 21

leg (right triangle)

Back 21

the two shorter sides of a right triangle (the two sides touching the right angle)

Front 22

hypotenuse

Back 22

the longest side of a right triangle (it is opposite the right angle)

Front 23

Hypotenue-Leg (HL) Theorem (Theorem 4-6)

Back 23

If the hypotenuse and a leg of one right triangle are congruent to the hypotenuse and a leg of another right triangle, then the triangles are congruent.

Front 24

Pythagorean Theorem

Back 24

a^2+b^2=c^2 when a and b are legs and c is the hypotenuse

Read: a squared pluse b squared equals c squared