Geo ACP: Midyear Terms and Definitions

Which statement is an example of the transitive property?

• $a=b$ , so $b=a$ .

• $a=b$ and $b=c$ , so $a=c$ .

• $a=a$ .

• $a=b$ , so $b=c$ .

Given:  $\overline{AB}\cong\overline{CD}$ . Which property justifies the conclusion that  $\overline{CD}\cong\overline{AB}$ ?

• Congruence

• Transitive

• Reflexive

• Symmetric

Which statement is justified by the reflexive property?

• $m\angle A=m\angle A$ .

• $a+b=c$ , so $a=c-b$ .

• $r=t$ and $r=x$ , so $t=x$ .

• $a-b=c$ , so $a=c+b$

Which is the formula for interior angle sum of an n-sided polygon?

• $S_I=n\cdot180\degree$

• $S_I=\left(n-2\right)\cdot180\degree$

• $S_I=\frac{360\degree}{n}$

• $S_I=\left(n-1\right)\cdot180\degree$

What is the sum of the exterior angles in any n-sided polygon?

• 360 degrees

•  $n\cdot180$  degrees

•  $n\ +$ 90 degrees

• 270 degrees

Which of the following is NOT a rigid transformation?

• Translation right 3 units and down 5 units

• Dilation with a scale factor of $\frac{1}{2}$ centered at the origin

• Reflection over the y-axis

• Rotation $180\degree$ counter-clockwise or clockwise

What does a "rigid transformation" do?

• Preserves the shape and size of an object

• Reduces the size of an object

• Preserves the general shape, but changes the size of an object

Vertical angles are ______ .

• supplementary

• corresponding

• congruent

• complementary

Linear pairs of angles are ______ .

• supplementary

• vertical

• congruent

• alternating

In an isosceles triangle, the base angles  ____________________.

• are both $60\degree$  

• are congruent

• add up to $180\degree$  

• are vertical to each other