Geometry 1st Semester Exam - Part 2

Front

What type of angle is 142°?

Back

Obtuse angle

Front

If polygon ABGH ≅ polygon CDEF, which segment corresponds to segment DF?

Back

BH

Front

What is the translation rule for (x +2, y - 1)?

Back

The translation moves the point 2 units to the right and 1 unit down.

Front

What do we call two lines that intersect at a right angle?

Back

Perpendicular lines

Front

How do you find the distance between two points (x1, y1) and (x2, y2)?

Back

Use the distance formula: √((x2 - x1)² + (y2 - y1)²).

Front

What is the definition of an acute angle?

Back

An angle that measures less than 90°.

Front

What is the definition of a right angle?

Back

An angle that measures exactly 90°.

Front

What is the definition of a straight angle?

Back

An angle that measures exactly 180°.

Front

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

Back

180°.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.