Answer: Denise
Step-by-step explanation
This property is equivalent to two angles of the triangle being equal. An isosceles triangle therefore has both two equal sides and two equal angles.
Step-by-step explanation:
2x-y=8
x+y=20
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3x=28
×=28÷3=9.3
so
9.3+y=20
y=20-9.3
y=20.7
Answer:
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