Summary of Unit 17

The interior angle sum of quadrilaterals is __________.

Draw an accurate copy of the triangle.

Why can't a protractor be used to construct the triangle?

Which of the following properties is used to find the measurement of the missing angle?

• angle sum

• exterior angle

• co-interior angles

• vertically opposite angles

Which of the following formulas can be used to find x?

• x = 150 - y

• x = 180 + y

• x = 180 - y

• x = 150 + y

What is the measurement of angle y? Justify your answer.

Circumcircle the triangle.

Find the measurement of the exterior angle BCD.

Dan says that c^o = d^o + 64^o because they are alternate angles.

Dan's statement is incorrect.

What should be Dan's formula to make the statement correct?

Construct a line that is perpendicular to the given line.

No protractor.

Find the measurement of x.