Line Symmetry and Diagonals

What does it mean to have diagonals bisect each other?

• That go across each other

• The point where diagonals meet is the midpoint

• The angles are congruent

• The full diagonal line is congruent to the other diagonal line

A figure has _______ symmetry when a line (or lines) divide the shape into two equal parts.

• Line

• Rotational

• Point

Select all that apply. Which of the following quadrilaterals have two lines of symmetry?

• Parallelogram

• Trapezoid

• Rectangle

• Rhombus

• Square

ABCD is a rhombus. What is the size of angle AED?

• 60 

• 45

• 90

• 180

How many lines of symmetry does a rectangle and rhombus have?

• 0

• 1

• 2

• 4

Line that goes from corner to corner

• Symmetry

• Bisect

• Diagonal

• Congruent

A 4 sided figure that has opposite sides parallel and congruent. All angles are right angles. Diagonals are congruent and bisect each other. Has 2 lines of symmetry.

• Square

• Rectangle

• Trapezoid

• Rhombus

A 4 sided figure that has all sides congruent, all angles at 90 degrees, and 4 lines of symmetry.

• Parallelogram

• Trapezoid

• Square

• Rectangle

Line that divides a figure into two congruent parts. Each of which are a mirror image of the other.

• Parallel

• Symmetry

• Diagonal

• Bisect

How many lines of symmetry does the picture have?

• 1

• 2

• 4

• 0