Triangles Quiz

What is an ALTITUDE of a triangle?

• A line segment from a vertex of the triangle bisecting the opposite side

• The midpoint of the base of the triangle
• The distance from the center of the triangle to one of its vertices
• A line segment from a vertex of the triangle perpendicular to the opposite side

What is an INCENTER of a triangle?

• The incenter is the point where the altitudes of the triangle intersect.
• The incenter is the point where the angle bisectors of the triangle intersect.
• The incenter is the point where the perpendicular bisectors of the triangle intersect.
• The incenter is the point where the medians of the triangle intersect.

What is a MEDIAN of a triangle?

• The line connecting the midpoints of two sides
• A line segment from a vertex to the midpoint of the opposite side
• The line connecting two non-adjacent vertices
• A line segment from a vertex to the midpoint of the same side

What is an ORTHOCENTER of a triangle?

• The point where the three medians of the triangle intersect
• The point where the three altitudes of the triangle intersect
• A point in the center of a circumscribed circle on a triangle.

• The point where the three angle bisectors of the triangle intersect

What is a CIRCUMSCRIBED CIRCLE of a triangle?

• A circle that passes through all the vertices of the triangle
• A circle that is only tangent to two sides of the triangle
• A circle that is completely inside the triangle
• A circle that is tangent to one side of the triangle

What is a CENTROID of a triangle?

• The centroid of a triangle is the point where the three perpendicular bisectors of the sides intersect.
• The centroid of a triangle is the point where the three altitudes of the triangle intersect.
• The centroid of a triangle is the point where the three medians of the triangle intersect.
• The centroid of a triangle is the point where the three angle bisectors of the triangle intersect.

Which of the following is the formula for the total interior angle measurements of a regular polygon?

• (n-2) * 180
• n / 180
• n + 180
• n * 180

What is the TRIANGLE Midsegment Theorem?

• Midsegment of a triangle is perpendicular to the third side of the triangle
• Midsegment of a triangle is not related to the third side of the triangle
• Midsegment of a triangle is longer than the third side of the triangle
• Midsegment of a triangle is parallel to the third side of the triangle and half of its length.

Which is NOT a way to prove angles are congruent?

• Same-Side Interior Angles

• Alternate Interior Angles

• Vertical Angles

• Alternate Exterior Angles

What is a PERPENDICULAR BISECTOR in a triangle?

• A line that is parallel to one of the sides of the triangle
• A line that connects two vertices of the triangle
• A line that passes through the midpoint of a side of the triangle and is perpendicular to that side
• A line that divides the triangle into two equal parts