We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
supports HTML5 video
Published byMarian Lang
Modified over 4 years ago
Basic Definitions in Geometry
Acute Angle An angle that measures between 0 and 90 degrees.
Right Angle Angle that measures 90 degrees and formed by perpendicular lines.
Obtuse Angle An angle that measures between 90 and 180 degrees.
Straight Angle An angle that measures 180 degrees.
Reflex Angle An angle that measures between 180 and 360 degrees.
Complementary Angle Two angles that add up to 90 degrees.
Supplementary Angles Two angles that add up to 180 degrees.
Equilateral Triangle A triangle that has 3 equal sides.
Equiangular Triangle A triangle that has 3 equal angles and each measures 60 degrees (sum is 180).
Scalene Triangle Triangle with different sides and angles.
Isosceles Triangle A triangle that has two equal sides and two equal base angles.
Vertical Angles Two angles in which the sides of one angle are opposite rays to the sides of the second angle.
Adjacent Angles Two angles having a common vertex and a common side, but do not have any interior points in common.
Line Segment 2 points called endpoints and all of the points in between them.
Ray A part of a line that consists of a point on the line, called the endpoint, and all of the points on one side of the line.
Opposite Rays Two rays of the same line with a common endpoint and no other points in common.
Collinear A set of points all lying on the same straight line.
Midpoint The point of a line segment that divides it into 2 congruent (equal) parts.
Bisector A line, ray, or segment which divides a segment into 2 congruent parts.
Perpendicular Lines Two lines that intersect to form right angles.
Altitude The perpendicular segment from a vertex of a polygon to the opposite side.
Median A segment that joins any vertex of a triangle to the midpoint of the opposite side.
Geometry Chapter 4 Cipollone.
Two rays with a common endpoint form an angle Two angles are supplementary if they add up to 180° - forming a straight line Two angles are complimentary.
CHAPTER 4 Congruent Triangles SECTION 4-1 Congruent Figures.
Geometry Terms. Acute Angles Acute Triangle Adjacent Angles Alternate Interior Angles Alternate Exterior Angles Angle Circle Complementary Angles Congruent.
a location in space that has no size.
Definitions and Examples of Geometric Terms
Classify Triangles Standard 4C.
Fall 2012 Geometry Exam Review. Chapter 1-5 Review p ProblemsAnswers 1One 2a.Yes, skew b.No 3If you enjoy winter weather, then you are a member.
Definitions of Key Geometric Terms A quick review of material covered in Math A La Salle Academy, Mrs. Masullo.
Geometry 2 nd Semester Vocabulary Review. 1.An arc with a measure greater than 180. Major arc 2.For a given circle, a segment with endpoints that are.
Math 2 Geometry Based on Elementary Geometry, 3 rd ed, by Alexander & Koeberlein 3.3 Isosceles Triangles.
Aim: Isosceles Triangle Course: Applied Geometry Aim: What is an Isosceles Triangle? Do Now: What type of triangle has sides of 3, 6, 8?
Triangle – a three sided polygon (straight sides; closed) A B C 3 sides: 3 angles: 3 vertices: A, B, C.
Defining Triangles During this lesson, you will define triangles and their parts.
GEOMETRY REVIEW Look how far we have come already!
Geometry. Kinds of triangles Geometry Kinds of triangles.
Classifying Triangles Angle Measures of Triangles.
L.T. I can identify special angle pairs and use their relationships to find angle measure.
© 2020 SlidePlayer.com Inc. All rights reserved.