Area and Perimeter of Triangles — Unit test

Question 1

Triangle D E F is shown. Angle F D E is a right angle. The length of D E is 40, the length of D F is 9, and the length of hypotenuse F E is 41.

Revolt · Accepted Answer

StartFraction 40 Over 9 EndFraction

Question 2

A right triangle is shown. The length of the hypotenuse is 4 centimeters and the lengths of the other 2 sides are congruent.

Revolt · Accepted Answer

cm

Question 3

Joey is building a frame for a sandbox. The sandbox is going to be a quadrilateral that has the lengths shown.

Revolt · Accepted Answer

a quadrilateral, because angle C and angle X are acute

Question 4

In which triangle is the value of x equal to tan−1? (Images may not be drawn to scale.)

Revolt · Accepted Answer

A right triangle is shown. The length of 2 sides are 5.2 and 3.1. The angle opposite to side with length 3.1 is x.

Question 5

Triangle ABC is a right triangle and cos(22.6o)=. Solve for b and round to the nearest whole number.

Revolt · Accepted Answer

tan(22.6o) =

Area and Perimeter of Triangles — Unit test Answers