SSAT Upper Level Math : Acute / Obtuse Triangles

Study concepts, example questions & explanations for SSAT Upper Level Math

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Example Questions

Example Question #11 : How To Find The Height Of An Acute / Obtuse Triangle

A triangle has an area of  and a base of . In feet, what is the height?

Possible Answers:

Correct answer:

Explanation:

Use the formula to find the area of a triangle.

Now, plug in the values for the area and the base to solve for height .

The height of the triangle is  feet.

Example Question #71 : Acute / Obtuse Triangles

Heron

Give the area of the above triangle.

Possible Answers:

Correct answer:

Explanation:

By Heron's formula, the area of a triangle given its sidelengths is 

Where  are the sidelengths and 

 ,

or half the perimeter.

Setting 

Therefore,

Example Question #72 : Acute / Obtuse Triangles

Heron

Give the area of the above triangle.

Possible Answers:

Correct answer:

Explanation:

By Heron's formula, the area of a triangle given its sidelengths is 

,

where  are the sidelengths and 

 ,

or half the perimeter.

Setting 

.

Therefore,

 

Example Question #3 : How To Find The Area Of An Acute / Obtuse Triangle

The base of the triangle is . The height of the triangle is a multiple of  between  and . What is the area of the triangle?

Possible Answers:

Correct answer:

Explanation:

First, find the height of the triangle by listing out the multiples of .

Since  is the only multiple of  that is between  and , it must be the height.

Now, find the area of the triangle.

Example Question #2 : How To Find The Area Of An Acute / Obtuse Triangle

The base of an obtuse triangle is , and the height is . What is the area of the triangle?

Possible Answers:

Correct answer:

Explanation:

Use the following formula to find the area of a triangle:

Now, substitute in  for the base and  for the height.

The area of the triangle is .

Example Question #4 : How To Find The Area Of An Acute / Obtuse Triangle

The height of an acute triangle is , and the base is . What is the area of this triangle?

Possible Answers:

Correct answer:

Explanation:

Use the following formula to find the area of a triangle:

Now, substitute in  for the base and  for the height.

The area of the triangle is .

Example Question #4 : How To Find The Area Of An Acute / Obtuse Triangle

The base of a triangle is , and the height is . In terms of , what is the area of the triangle?

Possible Answers:

Correct answer:

Explanation:

Use the following formula to find the area of a triangle:

Now, substitute in  for the base and  for the height.

The area of the triangle is .

Example Question #5 : How To Find The Area Of An Acute / Obtuse Triangle

The base of a triangle is , and the height is . What is the area of this triangle?

Possible Answers:

Correct answer:

Explanation:

Use the following formula to find the area of a triangle:

Now, substitute in  for the base and  for the height.

The area of the triangle is .

Example Question #6 : How To Find The Area Of An Acute / Obtuse Triangle

The height of a triangle is , and the base is . In terms of , what is the area of the triangle?

Possible Answers:

Correct answer:

Explanation:

Use the following formula to find the area of a triangle:

Now, substitute in  for the base and  for the height.

The area of the triangle is .

Example Question #7 : How To Find The Area Of An Acute / Obtuse Triangle

The height of a triangle is , and the base of the triangle is . In terms of , what is the area of the triangle?

Possible Answers:

Correct answer:

Explanation:

Use the following formula to find the area of a triangle:

Now, substitute in  for the base and  for the height.

The area of the triangle is .

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