
Lines, Angles, and Shapes
9th Grade · Math · 45 min· I-ready Math
Lesson Preview
Learning Objective
I can construct geometric shapes using appropriate tools and describe their properties related to lines and angles.
- 1
A compass is a tool used to draw perfect circles or arcs with a constant radius.
- 2
To construct a congruent angle, first draw an arc that intersects both rays of the original angle, keeping the compass radius constant when drawing a similar arc on the new angle.
- 3
If all three sides of two triangles are congruent, then the corresponding angles must also be congruent.


