Deck 20: Lines, Angles, and Triangles

Question 1

If the angles of a triangle are 60°, 60°, and 60°, what type of triangle is this?

Answer 1

Equilateral

Question 2

If the base angles of an isosceles triangle each measure 52°, what is the measure of the vertex angle?

Answer 2

76°

Question 3

What is the name of a triangle with one obtuse angle and two acute angles?

Answer 3

Obtuse

Question 4

Two angles of a triangle are 72° and 22°. What is the measure of the third angle?

Question 5

How many degrees are there in an isosceles triangle?

Question 6

Given the following dimensions for the sides of a triangle, tell whether it is a triangle and if so what type of triangle is it: 4 inches, 7 inches, and 9 inches.

Question 7

If the sides of a triangle are 14 inches, 10 inches, and 13 inches, what is the perimeter of the triangle?

Question 8

An obtuse angle is less than a right angle.

Question 9

Two angles in a triangle each equal 47°, which of the following would define what type of triangle this is?

Question 10

Two or more straight lines in a plane may or may not intersect .