Exploring– Open your workbooks to P. EXPLORE!!! 10/28 WORKBOOK WARM UP Exploring– Open your workbooks to P. EXPLORE!!! Parts A – H

7.3 TRIANGLE INEQUALITY OBJECTIVE I can verify the Triangle Inequality theorem and apply the theorem to solve problems. (G.6C)

Triangle Inequality Theorem The sum of any two side lengths of a triangle is greater than the third side length. TAKE NOTES

USING THE TRIANGLE INEQUALITY THEOREM Have students tear out P. 383

I DO, YOU WATCH Use the Triangle Inequality Theorem to tell whether a triangle can have sides with the given lengths. Explain. A) 4, 8, 10 Have students complete in workbooks P. 383

I DO, YOU HELP Use the Triangle Inequality Theorem to tell whether a triangle can have sides with the given lengths. Explain. B) 7, 9, 18 Have students complete in workbooks P. 383

TURN, TALK & JOT DOWN YOUR THOUGHTS 4. Can an isosceles triangle have these side lengths? Explain. 5, 5, 10 Have students complete in workbooks P. 384

P. 384 #S 6 & 7 YOU DO, I HELP Have students complete in workbooks

FINDING POSSIBLE SIDE LENGTHS IN A TRIANGLE

I DO, YOU WATCH Find the range of values for x using the Triangle Inequality Theorem. A) Have students complete in workbooks P. 371

I DO, YOU HELP Find the range of values for x using the Triangle Inequality Theorem. B) Have students complete in workbooks P. 371

P. 386 #S 9 & 10 YOU DO, I HELP Have students complete in workbooks

Side-Angle Relationships Triangle If two sides of a triangle are not congruent, then the larger angle is opposite the longer side. TAKE NOTES

ORDERING ANGLE MEASURES

I DO, YOU WATCH For each triangle, order its angle measures from least to greatest. A) Have students complete in workbooks P. 371

I DO, YOU HELP For each triangle, order its angle measures from least to greatest. B) Have students complete in workbooks P. 371

P. 387 #S 11 & 12 YOU DO, I HELP Have students complete in workbooks

Angle-Side Relationships Triangle If two angles of a triangle are not congruent, then the longer side is opposite the larger angle. TAKE NOTES

ORDERING SIDE LENGTHS

I DO, YOU WATCH For each triangle, order the side lengths from least to greatest. A) Have students complete in workbooks P. 388

I DO, YOU HELP For each triangle, order the side lengths from least to greatest. B) Have students complete in workbooks P. 388

P. 389 #S 13 & 14 YOU DO, I HELP Have students complete in workbooks

HW#3: 7.3 P. 389-390 #S 1-14 ALL DUE MONDAY Have students tear out ***check their boxes for orderly books before they leave

EQUILATERAL TRIANGLE All angles are ≅ DEFINTION A triangle with 3 congruent sides & 3 congr. angles CHARACTERISTICS All sides are ≅ All angles are ≅ EXAMPLE 1 EXAMPLE 2 EQUILATERAL TRIANGLE