Which of the following is not involved in constructing a circle inscribed in a triangle?
1 answer:
Constructing an a circle inscribed in a triangle involves these steps:
i) Draw 2 (or 3) of the angle bisectors. Their point of intersection is the center of the inscribed circle, or the incenter. Let's denote this point by O
ii) Draw a perpendicular line segment from the incenter to one of the sides. Let the intersection of the perpendicular from O and the side be T.
iii) Draw a circle with center the incenter, and radius the distance OT.
Answer: B) Only perpendicular bisectors are not involved.
i) Draw 2 (or 3) of the angle bisectors. Their point of intersection is the center of the inscribed circle, or the incenter. Let's denote this point by O
ii) Draw a perpendicular line segment from the incenter to one of the sides. Let the intersection of the perpendicular from O and the side be T.
iii) Draw a circle with center the incenter, and radius the distance OT.
Answer: B) Only perpendicular bisectors are not involved.
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Answer:
1
Step-by-step explanation:
(- 2 - )(- 2 +
)
each term in the second factor is multiplied by each term in the first factor.
- 2(- 2 + ) -
(- 2 +
) ← distribute both parenthesis
= 4 - 2 + 2
- 3 ← collect like terms
= 1