Geometry Geometry 3

Question 1

Two triangles that have the same shape but different sizes are called what?

Accepted Answer

Similar

Answer

Similar triangles have equal angles and proportional sides but may differ in size.

Question 2

What is the measure of each angle in an equilateral triangle?

Accepted Answer

60°

Answer

An equilateral triangle has three equal angles summing to 180°, so each is 60°.

Question 3

The circumference of a circle with diameter 10 is closest to which value?

Accepted Answer

31.4

Answer

Circumference = πd = π(10) ≈ 31.4.

Question 4

A trapezoid has parallel sides of 8 and 12 and a height of 5. What is its area?

Accepted Answer

50

Answer

Area = ½(b₁ + b₂)·h = ½(8 + 12)(5) = 50.

Question 5

What do you call a triangle with all sides of different lengths?

Accepted Answer

Scalene

Answer

A scalene triangle has three sides of different lengths.

Geometry Practice Test