CHHS Fall 2020 Geometry Midterm

Natalie is playing with the pinwheel like the one shown in the picture above. Which degree of rotation would carry the pinwheel onto itself?

• 5°

• 125°

• 216°

• 225°

If ABCD is a parallelogram, which statement would prove a that ABCD is a rectangle?

• ∠ABC ≅ ∠CDA

• AC ≅ BD

• AC ⟂ BD

• ∠ABD ≅ ∠DBC

As shown in the diagram below, CD is a median of △ABC.

Which statement is always true?

• AD ≅ DB

• AC ≅ AD

• ∠ACD ≅ ∠CDB

• ∠BCD ≅ ∠ACD

Which transformation does not produce an image that is congruent to the original?

• A dilation of scale factor 1 centered at (2,4)

• A dilation of scale factor ½ centered at the origin

• A reflection over y = 4x

• A rotation of 270 degrees followed by a translation down 2

Given: △ABD, BC is the perpendicular bisector of AD Which statement cannot always be proven?

• AC ≅ DC

• BC ≅ CD

• ∠ACB ≅ ∠DCB

• △ABC ≅ △DBC

The triangles below are similar. Find the missing side length.

• x = 30

• x = 333

• x = 10.8

The triangles below are similar. Find x.

• x = 42

• x = 14

• x = 12

• x = 144

Which of the following statements correctly describes perpendicular lines?

• Coplanar but do not intersect

• Coplanar and intersect at 90 degree angle

• Coplanar and intersect at either obtuse or acute angles

• Not coplanar

What type of triangle is shown?  Complete the statement:  ∠A≅∠_.

• Equilateral; C

• Isosceles; C

• Isosceles; B

• Scalene; None

Describe the transformation in the picture from the black triangle to the blue triangle.

• Reflection over the y-axis

• Reflection over the x-axis

• Reflection over y=x

• Reflection over y=-x