NOTEBOOK CHECK

1. Triangle Sum 2. Isosceles and equilateral Triangles3. Triangle Inequalities 4. Triangle Congruency SSS and SAS 5. Proving Triangles are Congruent ASA and AAS6. Using Congruent Triangles 7. Perpendicular and Angle Bisector 8. Reflections and symmetry

Geometry Unit 3 Review

P

RQ

14 18

23

What is the smallest angle?

What is the largest angle?

A

B

C

In the figure BD bisects AC

D

Name all the congruent parts

1

2 3

Angle 1 = (2x -3)Angle 2 = (x)Angle 3 = (3x -15)

Find the measure of angle 3?

U

V

W

X YGiven: <U = < Y, XV = VWProve: UVW = YVW

Make a two Column proof.

Statement Reason

A

B

C D

E

F

< BCA = 47 <EFD = 74

Line ______ is greater than (>) line ______

U

V

W

X YGiven: Line XW and YU bisect each other

Make a two Column proof.

Statement Reason

What is the measure of one interior angle of the regular polygon?

What is the measure of the exterior angles of the regular polygon?

The exterior angle of a regular polygon is 30. How many sides does the polygon have?

Determine whether the side lengths can form a triangle

• 5, 8, 16• 20, 24, 40• 7, 7, 14• 31, 45, 50

W

X Y

Z

XW // YZ and XY // WZProve < W = < Y

List the sides in order from shortest to longest

x

y

z27

45

108

What could the length of the missing side of the triangle be

9, 12, ?10, 15, ? 5, 7, ?

What information do you need to prove that the triangles are congruent by SAS?

B

A

C

D

E

F

75

75

What is the value of X

2x + 40

x + 30

110

65

A regular polygon has an interior angle of 135, what would be the sum of the measures of the interior angles.