Math on Triangles

The angle measures of a triangle are shown in the diagram. What is the value of x ?

• 25

• 20

• 10

• 28

Mr. Brown used similar triangles to make a design. Which statement about the triangles in the design must be true?

• They are the same size and shape.

• They are the same size but different shapes.

• They have corresponding angles that are congruent.

• They have corresponding sides that are congruent.

The triangles are similar. What is the value of x?

• 4

• 36

• 1.8

• 5

Identify the Scale Factor. Click on image to see.

• 1/6

• 6

• 1/5

• 5

What is the formula for the area of a triangle?

• A = 1/2 bh

• A = bh

• A = s + s + s

• 146
• 34
• 36
• 136

How do you find the area of this triangle?

• A = bh

  A = (30)(21)

• acute

• obtuse

• right

• straight

• acute

• obtuse

• right

• straight

• acute

• obtuse

• right

• straight