Classify the triangle. A. scalene B. isosceles C. equilateral

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Presentation transcript:

Classify the triangle. A. scalene B. isosceles C. equilateral 5-Minute Check 1

Find x if mA = 10x + 15, mB = 8x – 18, and mC = 12x + 3. 5-Minute Check 2

5-Minute Check 5-Minute Check 6 Find y if ΔDEF is an equilateral triangle and mF = 8y + 4. A. 22 B. 10.75 C. 7 D. 4.5 5-Minute Check 5-Minute Check 6

You used segment and angle bisectors. Identify and use perpendicular bisectors in triangles. Identify and use angle bisectors in triangles. Then/Now

Concept

Use the Perpendicular Bisector Theorems A. Find BC. Example 1

Use the Perpendicular Bisector Theorems B. Find XY. Example 1

Use the Perpendicular Bisector Theorems C. Find PQ. Example 1

A. Find NO. A. 4.6 B. 9.2 C. 18.4 D. 36.8 Example 1

B. Find TU. A. 2 B. 4 C. 8 D. 16 Example 1

C. Find EH. A. 8 B. 12 C. 16 D. 20 Example 1

Concept

Use the Angle Bisector Theorems A. Find DB. Example 3

Use the Angle Bisector Theorems B. Find mWYZ. Example 3

Use the Angle Bisector Theorems C. Find QS. Example 3

A. Find the measure of SR. A. 22 B. 5.5 C. 11 D. 2.25 Example 3

B. Find the measure of UV. A. 7 B. 14 C. 19 D. 25 Example 3

C. Find the measure of HFI. B. 30 C. 15 D. 30 Example 3