Geometry Triangles & Congruence 3

Question 1

In an isosceles triangle, the two angles opposite the equal sides are called what?

Accepted Answer

Base angles

Answer

The angles opposite the congruent sides are the base angles and are equal.

Question 2

An equilateral triangle has how many degrees in each interior angle?

Accepted Answer

60 degrees

Answer

180 divided among three equal angles gives 60 degrees each.

Question 3

Which postulate uses two sides and the angle between them?

Accepted Answer

SAS

Answer

Side-Angle-Side uses two sides with the included angle.

Question 4

The exterior angle of a triangle equals the sum of which angles?

Accepted Answer

The two remote interior angles

Answer

An exterior angle equals the sum of the two non-adjacent (remote) interior angles.

Question 5

Triangle DEF is congruent to triangle GHI. Which side corresponds to side DE?

Accepted Answer

GH

Answer

Corresponding vertices in order give DE matching GH.

Geometry Practice Test