2nd 9 Weeks Test Review- Geometry

Front

What is an acute triangle?

Back

An acute triangle is a triangle where all angles are less than 90°.

Front

What is the sum of the angles in any triangle?

Back

The sum of the angles in any triangle is always 180°.

Front

Can a triangle have sides of lengths 3, 4, and 9?

Back

No, a triangle cannot have sides of lengths 3, 4, and 9 because the sum of the lengths of any two sides must be greater than the length of the third side.

Front

What is the formula for the area of a triangle?

Back

The area of a triangle is given by the formula: Area = 1/2 * base * height.

Front

What is a right triangle?

Back

A right triangle is a triangle that has one angle equal to 90°.

Front

What is the Pythagorean theorem?

Back

The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides (a² + b² = c²).

Front

What is an obtuse triangle?

Back

An obtuse triangle is a triangle that has one angle greater than 90°.

Front

What is the difference between a scalene triangle and an isosceles triangle?

Back

A scalene triangle has all sides of different lengths, while an isosceles triangle has at least two sides of equal length.

Front

What is the formula for the perimeter of a triangle?

Back

The perimeter of a triangle is the sum of the lengths of its sides: Perimeter = a + b + c.

Front

What is a complementary angle?

Back

Complementary angles are two angles whose sum is 90°.