# pre algebra 3

## Question 1 (5 points)

*Find the coordinates of the vertices of each figure after a reflection over the given axis.*

triangle

*ABC* with vertices

*A*(â€“8, 5),

*B*(â€“7, â€“6), and

*C*(3, 4);

*x*-axis

## Question 2 (5 points)

Draw an obtuse isosceles triangle.

## Question 3 (5 points)

Draw a right isosceles triangle.

## Question 4 (5 points)

A triangle has the vertices *A*(â€“7, 8), *B*(1, â€“7), and *C*(7, 6). After a dilation, the vertices of the image are *A’*(â€“28, 32), *B’*(4, â€“28), and *C’*(28, 24). What is the scale factor of the dilation?

## Question 5 (5 points)

Determine if the two figures are similar by using transformations.

## Question 6 (5 points)

*Find the coordinates of the vertices of the figure after a reflection over the given axis. Then graph the reflection image.*

*x*-axis

## Question 7 (5 points)

*Refer to the figure below.*

If

*m*

, what is the measure of an angle that is complementary to

?

## Question 8 (5 points)

*Classify the polygon. Then determine whether it appears to be regular or not regular.*

## Question 9 (5 points)

The measures of the angles of a triangle are shown below. Find the value of *x.*

79Â°, 70Â°, *x*Â°

## Question 10 (5 points)

*Find the coordinates of the imageâ€™s vertices.*

A triangle with vertices

*L*(â€“1, 5),

*M*(â€“1, 7), and

*N*(â€“8, 5) is rotated 270

counterclockwise about the origin.

## Question 11 (5 points)

*Copy parallelogram ABCD.*

Rotate the parallelogram

clockwise about point

*Q*.

## Question 12 (5 points)

Draw an obtuse scalene triangle.

## Question 13 (5 points)

*Determine the scale factor for each dilation. Determine whether the dilation is an enlargement, reduction, or congruence transformation.*

## Question 14 (5 points)

*Use the terms vertical angles, adjacent angles, complementary angles, or supplementary angles to describe angles 1 and 2 in as many ways as possible.*

## Question 15 (5 points)

Find the missing measure in the triangle.

*A* = 94Â°, *B* = 54Â°, *C* = *x*Â°

## Question 16 (5 points)

Draw an acute equilateral triangle.

## Question 17 (5 points)

*Classify the polygon. Then determine whether it appears to be regular or not regular.*

## Question 18 (5 points)

*Use the terms vertical angles, adjacent angles, complementary angles, or supplementary angles to describe angles 1 and 2 in as many ways as possible.*

## Question 19 (5 points)

*Classify the polygon. Then determine whether it appears to be regular or not regular.*

## Question 20 (5 points)

*Find the value of x in the figure.*