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3 years ago

Choose two transformations that could have been performed on triangle JKL to form congruent triangle J"K"L".

Mathematics

1 answer:

Svetllana [295]3 years ago

3 0

Triangle JKL was rotated 90° counterclockwise and then refrected across the line y = -4.

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What is the Q3 of the data set: 1,2,4,1,2,3,3,2 ? *

GaryK [48]

Answer:

Given the points A, B, C, D, calculate:

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(b) the area of the triangle ABC

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The measure of an exterior angle of a regular polygon is given below. Find the measure of an interior angle. Then find the numbe

FromTheMoon [43]

Answer:

Internal angle = $160^\circ$

Number of sides = 18

Step-by-step explanation:

Given that:

We have a regular polygon with number of sides unknown.

Measure of an exterior angle of the polygon = $20^\circ$

To find:

Measure of an interior angle and the number of sides of the polygon?

Solution:

Let us have a look at the relation of sum of external angles.

Sum of one internal angle and its corresponding external angle = $180^\circ$

Internal angle + external angle = $180^\circ$

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Let the number of sides = $n$

Therefore,

$n \times 20^\circ = 360^\circ\\\Rightarrow n = 18$

Therefore, the answers are:

Internal angle = $160^\circ$

Number of sides = 18

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