Math 2 Unit 2 Final test (lessons 1-10) Study Guide

Straight Angle

Straight Angle

Two rays extend in exactly two opposite directions and share a common endpoint (the center)

Linear Pair

The two angles created if two angles share a vertex and together make a straight angle

Supplementary angles

The sum of two angles that equal 180 degrees

Complementary angles

Add up to 90 degrees

Altitude

is a line segment drawn from a vertex perpendicular to the opposite side (or an extension of the opposite side).

Median

is a line segment drawn from a vertex to the midpoint of the opposite side.

Angle bisector

is a line segment or ray drawn from vertex that cuts the angle in half.

Perpendicular bisector of a side

is a line drawn perpendicular to a side of the triangle through its midpoint.

SSS

Congruent

SAS

Congruent

ASA

Congruent

AAS

Not Congruent

HL

Congruent

AAA

Not Congruent

SSA

Not Congruent

What is the sum of the angles in a triangle?

180 degrees

Points along the perpendicular bisector are equidistant from the endpoints of the segment. (Type Ok)

Ok

quaderlateral

4 sided polygon

Square (Type Ok)

Ok

Rhombus (Type Ok)

Ok

Parallelogram (Type Ok)

Ok

Isosceles Trapezoid (Type Ok)

Ok

Trapezoid

No sides are congruent

Equilateral Triangle

All sides are congruent

Isosceles triangle

2 sides are congruent

Scalene triangle

No sides are congruent

Vertical Angles

the opposite angles formed at the point of intersection.

Exterior Angles of a Triangle

the angle formed on the exterior of the triangle is called an exterior angle.

Remote interior angles

the two angles of the triangle that are not adjacent to the exterior angle

Transversal line

a line that intersects two or more other lines.