Lesson 10-4 Pages 513-517 Quadrilaterals Lesson Check 10-3.

Lesson 10-4 Pages 513-517

Quadrilaterals

Lesson Check 10-3

What you will learn!

How to find missing angle measures of quadrilaterals and classify quadrilaterals.

QuadrilateralQuadrilateral

What you really need to know!

A quadrilateral is a closed figure with four sides and four vertices. Squares, rectangles, and trapezoids are examples of quadrilaterals.

What you really need to know!

The sum of the angles of a quadrilateral is 360°.

Example 1:

Find the value of x. Then find each missing angel measure.

Example 1:

4x + 110 + x + 75 = 3605x + 185 = 3605x = 175x = 35

140°

35°

Example 2:

Classify each quadrilateral using the name that best describes it.

Trapezoid

Parallelogram

Square

Page 515

Guided Practice

#’s 3-7

Pages 513-515 with someone at home and

study examples!

Read:

Homework: Pages 516-517

#’s 8-13, 16-21, 23-26, 31, 32, 34-40

Practice Quiz 1 #’s 1-5Lesson Check 10-4

Page

748

Lesson 10-4

Lesson Check 10-4

Prepare for Mid-Test!

Pages 544-546

#’s 1-21Odd Answers in Back of Book!