Triangle ABC has vertices at points A(-1,1), B(-4,1) and C(-1,5).
270° rotation about the origin in anti-clockwise direction has the rule:
(x,y)→(y,-x).
Then
- A(-1,1)→A'(1,1);
- B(-4,1)→B'(1,4);
- C(-1,5)→C'(5,1).
Reflection about the x-axis has the rule
(x,y)→(x,-y).
Then
- A'(1,1)→L(1,-1);
- B'(1,4)→M(1,-4);
- C'(5,1)→N(5,-1).
Thus, triangles ABC and LMN are congruent.
Answer: correct option is A.
Answer:
y = 8.66
Step-by-step explanation:
tan 60° = y/5
1.7321= y/5
y = 8.66
15 square units
Not sure...
Answer: (a) x = -1
Step-by-step explanation:
<u>Given</u>
x - 8 = - 9
<u>Add 8 on both sides to isolate x</u>
x - 8 + 8 = - 9 + 8
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