Techno Teacher6.13

Properties of Quadrilaterals

AnticipatoryIn 5th grade you learned that a triangle has 3 sides and the

sum of its angles totals 180˚A quadrilateral is two triangles put together to make 4

sides. What is the sum for the angles of a quadrilateral?

180˚

180˚Quadrilaterals sum of angles is ALWAYS 360˚

Look at the big screen to sing the quadrilateral song

Click the Happy Face to Watch the Video

Make a cover sheet for your interactive notebook

6.13Properties of Quadrilaterals

Parallelogram Square Rectangle Rhombus Trapezoid Kite

Vocabulary 6.13Write in notebook

parallel Two or more lines, found in the same plane, that remain the same distance apart

They never intersect, just like the two “L”s in parallel.

Perpendicular Lines that meet to form right angles

Perpendicular Bisector A line which cuts a line segment into two equal parts at 90°.

Right Angle An angle whose measure is 90°

Plane Figure A two dimensional figure

Doodle Bob is 2-D (Sponge Bob is 3-D)

Polygon A closed, two dimensional figure formed by three or more straight sides

Quadrilateral A polygon with four sides

Quad means 4 and lateral means side

360° The sum of the measures of angles of a quadrilateral

Quadrilaterals

Parallelograms opposite sides are parallel and opposite angles are congruent

All 4 sided polygons

four right angles and opposite sides parallel

Rectangle Rhombus

Square all sides congruent

four congruent sides and all angles congruent and 90˚

Only one pair of parallel sides.

Trapezoid Kite No parallel sides .

Copy this chart in vocabulary. Use color.

Remember, the sum of angles for quadrilaterals is always 360˚

So what is the angle measure for x?

As a team, decide the answer!

35˚

125˚

x˚ 80˚

Click when you have an answer to see if you are right!

Add up the 3 angles given and subtract from 360 and you will discover the missing measure!

35 + 125 + 80=240

360- 240 = 120120˚

Copy and answer the following questions in your notebook

Identify the quadrilateral. Arrows mean parallel. Hash marks mean congruent.

Find the value of x. Remember quadrilateral angles add up to 360˚.

45˚115˚

x˚

Check and Correct Your Answers

Identify the quadrilateral. Arrows mean parallel. Hash marks mean congruent.

Find the value of x. Remember quadrilateral angles add up to 360˚.

45˚140˚

x˚

RhombusTrapezoid Rectangle

108˚

Parallelogram

96˚

˚

85˚

It is now time for independent work. This is a grade.No sharing Information with others.

Exit Ticket- You may use your notesDraw and Name the Quadrilaterals1.

2.

3.

4.

5.

6.

Please shut down your computer and close.