What is the formula for the area of a right triangle?

The area is given by $$\frac{1}{2} \times \text{base} \times \text{height}$$ .

What is the Pythagorean theorem?

In a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides: $$a^2 + b^2 = c^2$$ .

What is the relationship between the angles in a right triangle?

The sum of the angles in a triangle is always 180°. In a right triangle, one angle is 90°, so the other two angles must sum to 90°.

What is the definition of a leg in a right triangle?

A leg is one of the two sides that form the right angle in a right triangle.

What is the definition of a hypotenuse?

The hypotenuse is the longest side of a right triangle, opposite the right angle.

If the hypotenuse of a 30-60-90 triangle is 12, what is the length of the short leg?

The short leg is $$\frac{12}{2} = 6$$ .

What is the measure of the angles in a 45-45-90 triangle?

The angles are 45°, 45°, and 90°.

What is the measure of the angles in a 30-60-90 triangle?

The angles are 30°, 60°, and 90°.

Special Right Triangles Practice Flashcards

Student preview

15 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is a 45-45-90 triangle?

Back

Tags

CCSS.8.G.B.8

2.

FLASHCARD QUESTION

Front

What is a 30-60-90 triangle?

Back

Tags

CCSS.8.G.B.8

3.

FLASHCARD QUESTION

Front

What is the hypotenuse in a 45-45-90 triangle?

Back

Tags

CCSS.8.G.B.8

4.

FLASHCARD QUESTION

Front

What is the long leg in a 30-60-90 triangle?

Back

Tags

CCSS.8.G.B.8

5.

FLASHCARD QUESTION

Front

What is the short leg in a 30-60-90 triangle?

Back

The short leg is opposite the 30° angle and is the shortest side of the triangle.

Tags

CCSS.HSG.CO.C.10

6.

FLASHCARD QUESTION

Front

If the leg of a 45-45-90 triangle is 6, what is the hypotenuse?

Back

Tags

CCSS.8.G.B.8

7.

FLASHCARD QUESTION

Front

If the short leg of a 30-60-90 triangle is 4, what is the length of the long leg?

Back

Tags

CCSS.HSG.CO.C.10

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