Given: quadrilateral abcd is inscribed in circle o.
prove: m∠a + m∠c = 180°
drag...
![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 29.01.2020 07:53, amahar4000
Given: quadrilateral abcd is inscribed in circle o.
prove: m∠a + m∠c = 180°
drag an expression or phrase to each box to complete the proof.
statements → reasons
1. → given
2. mbcd = 2(m∠a) →
3. mdab = 2(m∠c) → inscribed angle theorem
4. → the sum of arcs that make a circle is 360°.
5. 2(m∠a) + 2(m∠c) = 360° →
6. m∠a + m∠c = 180° → division property of equality
answer choices:
substitution property
inscribed angle theorem
central angle theorem
mbcd + mdab = 360°
mbcd = mdab
quadrilateral abcd is inscribed in circle o.
i'm guessing:
1. quadrilateral abcd is inscribed in circle o.
4. mbcd + mdab = 360°
5. inscribed angle theorem
i'm not sure about 5 or 2.
.
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