Triangle Sum Properties Chapter 4 Section 1 Triangle

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Triangle Sum Properties Chapter 4, Section 1

Triangle Sum Properties Chapter 4, Section 1

Triangle Sum Properties: Video • https: //www. youtube. com/watch? v=Ixxvuk. I 9 c_o •

Triangle Sum Properties: Video • https: //www. youtube. com/watch? v=Ixxvuk. I 9 c_o • https: //www. youtube. com/watch? v=Ku. Q_9 q. OGm. Zs • https: //www. youtube. com/watch? v=m. Le. Na. Zcyh. E&index=5&list=PLUPEBWb. AHUsx 47 fzhccf. RSk 4 u. Nn. Bwtk 7 n

Once your teachers has checked your triangles, glue them in your journal on a

Once your teachers has checked your triangles, glue them in your journal on a page titled “Triangle Sum Properties.

Once your teachers has checked your triangles, glue them in your journal on a

Once your teachers has checked your triangles, glue them in your journal on a page titled

Journal Entry

Journal Entry

Notes: Classifying Triangles by Sides.

Notes: Classifying Triangles by Sides.

Notes: Classifying a Triangle by Angles

Notes: Classifying a Triangle by Angles

Quick Group Activity (answers on next slide).

Quick Group Activity (answers on next slide).

Notes:

Notes:

Notes: Remember, you can also use Pythagorean theorem to find the length of a

Notes: Remember, you can also use Pythagorean theorem to find the length of a line. 7 1 3 2 1 6

Notes

Notes

Notes

Notes

Notes: Examples Finding the measure of an exterior angle.

Notes: Examples Finding the measure of an exterior angle.

Notes Example St Su ep bs 2 tit ut e S p e t

Notes Example St Su ep bs 2 tit ut e S p e t 1

Notes: Finding x and y. Step 2. Now there is enough information to find

Notes: Finding x and y. Step 2. Now there is enough information to find y. y+25=90 y=65 Step 3: Find x If this angle is 90, Look at the green triangle. so is this one. Now that we know y = 65, we can find. 65 + 20 + = 180 = 95 Step 1. Look for a triangle that has enough information to solve. Sometimes you have to ignore a line. Look at the highlighted triangle. Step 4: = 95. x + 95 make a linear pair. +x = 180 95 + x =180 x = 85

Practice Classify the triangles: 1. By sides 2. By angles.

Practice Classify the triangles: 1. By sides 2. By angles.

Practice

Practice

Practice

Practice

Practice: Find the values of x and y.

Practice: Find the values of x and y.

Group Activity 2: (answers on next slide)

Group Activity 2: (answers on next slide)

Quiz Mc. Dougal Littell

Quiz Mc. Dougal Littell