Define angles across from each other. An informative segment from a larger playlist on geometry introduces vertical angles and shows they have equal measures. Using their properties, the presenter solves problems involving vertical angles.

Are there only three options: parallel, perpendicular, or intersecting? Scholars move a given line in an interactive to change its orientation with respect to another line. The interactive indicates whether the lines are parallel,...

Navigate your way through a lesson on types of lines. Individuals drag line segments to illustrate paths between pairs of houses on an interactive map. They determine if these line segment pairs are intersecting or parallel.

If lines aren't parallel or perpendicular, then what are they? An interactive lets users rotate a line to change its orientation with respect to another line. It then indicates whether the lines are parallel, perpendicular, or...

Take a linear approach to acquaint the class with angles. The video introduces the idea of angles from the notion of intersecting lines. Using the idea of perpendicular lines, the resource defines right, acute, and obtuse angles along...

Yo, yo, learn about vertical angles with a yo-yo. Using an interactive, scholars adjust the position of fingers holding a design from a yo-yo. Answering a set of challenge questions based on the interactive helps clarify understanding of...

Examine vertical angles from a different angle. Moving one line in an intersecting pair of lines lets users see relationships between vertical angles. They finish by answering some machine-scored questions on the topic.

Sometimes line segments just refuse to meet. Young mathematicians connect houses on an interactive map using line segments. They must then determine whether these line segment pairs are intersecting or parallel.

Why are vertical angles congruent? Pupils must identify a pair of congruent vertical angles from a diagrams. Of course, they must prove that they are congruent.

Get the right definition of perpendicular lines. The short assessment asks pupils to draw a pair of perpendicular lines and label them. The scholars develop a definition of perpendicular lines that contains the right amount of...

What does it take to be precise in creating a definition? Scholars demonstrate an understanding of parallel lines by drawing them. They develop a definition that contains enough information but does not have any unecessary criteria.

Why was the obtuse angle upset? Because it was never right! A valuable resource is loaded with background information on types of angles and lines. Learners review the characteristics of parallel, perpendicular, and intersecting lines,...

Set your pupils up to start on geometry by teaching them some introductory terminology. Pupils learn the terms by reading a short passage and looking at examples. They then respond to five questions related to the text.

Perpendicular lines intersect to form right angles - four of them to be exact. Vertical angles, congruent angles, 90 degrees each, these are some of the special properties of perpendicular lines. Watch this video to find out a couple...

What makes vertical angles so special? Here's a few words that might help you figure out why: intersecting lines, congruent angles, opposite, supplementary angles. Still wondering? Then watch this video for a good explanation of vertical...

Who knew there were so many fun educational opportunities featuring pasta? Scholars read a brief informational text about the history of pasta (note that "macaroni" is spelled two different ways, so address this if kids are reading...

Learners draw and label 8 geometric figures when given the labels. Definitions of basic geometric figures are given. Some of the questions deal with parallel lines, perpendicular lines, and the vertex of angles and rays.

Find here a creative approach to reviewing lines, line segments, points, rays, and intersection. Riddle solvers answer questions or name parts of the figure that they have drawn by following directions at the top of the page. 

Here is an identifying lines, line segments, rays, and angles worksheet which has learners identify the figures by telling whether figures are right angles, less than a right angle, or greater than a right angle, identifying lines as...

Fourth and fifth graders use words and symbols to name 4 figures. They label lines as parallel, intersecting, or perpendicular in the next three questions before drawing three examples of their own. They complete two test prep question...

Elementary schoolers examine a bowl of alphabet soup and follow the directions to group the letters. They group letters that contain perpendicular, parallel, and non-perpendicular intersecting lines. They determine which letters have...

In this geometry worksheet, upper graders use pattern blocks as a basis for identifying lines, angles, and shapes. Then they compare and contrast properties of various two-dimensional shapes. Pupils also create a block quilt from paper...