Angle Addition Postulate and Segment Addition Postulate

B is the midpoint of AC.  Find AB.

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Q is the midpoint of PR.
PQ = 6x – 7 and QR = 5x + 1.
Find the length of PR.

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• 82

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• -8

Let B be between A and C.

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Solve

• x = 6
• x = 7
• x = 12
• x = 144

Use the figure to write and solve an equation for x.

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Tags

CCSS.4.MD.A.2

What does the word BISECT mean?

• To cut something into more than five pieces.
• It is a plane with two sets of wings.
• A shape that has three sides. 
• To cut something into two congruent pieces or in half.

If AB = 2x+3, BC = 3x-5, and AC = 38, what is the value of x ?

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Which postulate or definition states that
m∠ADB + m∠BDC = m∠ADC?

• Segment Addition Postulate
• Angle Addition Postulate
• Definition of Angle Bisector
• Definition of Congruent Angles

Find the missing angle.

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