Download For each of the figures below

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Geometry A U2D5:
Date: _________________
HW Unknown Angle Proofs—Writing Proofs
1. Given the diagram on the right, prove that ∠𝑤 = ∠𝑦 + ∠𝑧.
Statements
Reasons
Exterior angle of a triangle
Vertical Angles are congruent
∠𝑤 = ∠𝑦 + ∠𝑧
2.
In the diagram on the right, prove that ∠𝑎 + ∠𝑏 + ∠𝑐 = 360°.
Statements
c
Reasons
z
x
a
Angles on a line = 180°
∠𝑥 + ∠𝑦 + ∠𝑧 = 180°
∠𝑥 + ∠𝑎 + ∠𝑦 + ∠𝑏 + ∠𝑧 + ∠𝑐 = ______
Subtraction Postulate
y
b
For each of the figures below:
State the name of the figure and then find the volume.
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