5x = 25
x = 5
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False, you graph an open circle on -3 and shade to the right because x must be larger than -3 and it can not equal -3
Answer: A three-sided polygon is a triangle.
There are several different types of triangle (see diagram), including: Equilateral – all the sides are equal lengths, and all the internal angles are 60°. Isosceles – has two equal sides, with the third one a different length.
Step-by-step explanation:
