Math Vocabulary for Geometry Unit



KEY MATH LEARNINGS FOR UNIT 4

• An angle is formed when two lines meet.

• The size of an angle is a measure of the amount of turn needed to move from one arm to the other.

• An angle can be named by the way it relates to a right angle or a straight angle.

• Concrete, non-standard units can be used to measure and compare angles.

• Angles can be measured using a standard protractor.

• Angles are classified according to their measures in degrees.

• To estimate the measure of an angle, we can use 45, 90, 180, as reference angles.

• An angle of a given measure can be constructed using a standard protractor.

• Angles of 45, 90, and 180 can be drawn without using a protractor.

• The sum of the interior angles in any triangle is 180.

• The sum of the angles in a quadrilateral is 360.

Study Guide

For the spot checks, I need to be able to:

• Estimate the size of an angle

• Name and define angles: obtuse, acute, right and reflex

• Use a protractor to measure angles

• Draw a reflex angle using a 180 protactor

• Draw and label an angle when given the measure

• Find the missing measure in a triangle or a quadrilateral without using a protractor

................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download