Semester 1 Final Exam 10th Period

Front

Solve for x: 2x + 3 = 15

Back

x = 6

Front

What is the centroid of a triangle?

Back

The centroid is the point where the three medians of a triangle intersect.

Front

Do the following side lengths form a triangle? 3 inches, 4 inches, 8 inches

Back

No

Front

Find the length of side AB if AC = 10 and BC = 6 in a right triangle.

Back

AB = 8 (using Pythagorean theorem).

Front

What is a median in a triangle?

Back

A median is a line segment joining a vertex to the midpoint of the opposite side.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

Front

If the angles of a triangle are 30°, 60°, and 90°, what type of triangle is it?

Back

It is a right triangle.

Front

What is the relationship between the angles in a triangle?

Back

The sum of the interior angles of a triangle is always 180°.

Front

What is the circumcenter of a triangle?

Back

The circumcenter is the point where the perpendicular bisectors of the sides intersect.

Front

If two sides of a triangle are equal, what type of triangle is it?

Back

It is an isosceles triangle.