Angle Addition Postulate (Part 1)

Objective: Find and angle measurements using the Angle Addition Postulate.

EXAMPLE

A is in the interior of ∠BNJ.

If m∠BNA = (2x)°, m∠ANJ = (5x)°, and m∠BNJ = 84°. Find x.

EXAMPLE

S is in the interior of ∠TRQ.

If m∠TRS = (4x)°, m∠SRQ = (7x)°, and m∠TRQ = 88°.

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Find m∠TRS.​

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Find m∠SRQ.​

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​This is a continuation of the problem you JUST did where x = 8.

EXAMPLE

S is in the interior of ∠TRQ.

If m∠TRS = (2x)°, m∠SRQ = (6x)°, and m∠TRQ = 104°.

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Find m∠TRS.​

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Find m∠SRQ.​

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EXAMPLE

A is in the interior of ∠BNJ.

If m∠BNA = (3x)°, m∠ANJ = (2x + 1)°, and m∠BNJ = 76°. Find x.