Geo Unit 4

Front

What is a midsegment in a triangle?

Back

A midsegment is a line segment that connects the midpoints of two sides of a triangle. It is parallel to the third side and its length is half the length of that side.

Front

If QR is a midsegment of triangle FGH, how do you find the length of QR?

Back

To find the length of QR, measure the lengths of the two sides it connects, and use the property that QR is half the length of the side opposite to it.

Front

What is the sum of the interior angles of a triangle?

Back

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

Front

How do you determine if two triangles are similar?

Back

Two triangles are similar if their corresponding angles are equal and the lengths of their corresponding sides are proportional.

Front

What is the relationship between the angles in similar triangles?

Back

In similar triangles, corresponding angles are equal.

Front

If two polygons are similar, what can be said about their corresponding sides?

Back

The corresponding sides of similar polygons are in proportion.

Front

What is the formula for finding the measure of an exterior angle of a triangle?

Back

The measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles.

Front

If angle X measures 60 degrees, what is the measure of its supplementary angle?

Back

The measure of the supplementary angle is 120 degrees, since supplementary angles add up to 180 degrees.

Front

What is the definition of a polygon?

Back

A polygon is a closed figure formed by a finite number of straight line segments that connect to form a closed chain or circuit.

Front

How do you find the value of x in a triangle when given two angles?

Back

To find the value of x, use the fact that the sum of the angles in a triangle is 180 degrees. Subtract the sum of the known angles from 180.