Topics
7. Proof & Congruence
topic badge
United States of AmericaUT
Math II

7.07 Isosceles and equilateral triangles

Lesson
Practice

Interactive practice questions

Consider the following triangle in the figure:

A triangle is shown with each angle labeled as $60$60 degrees. Each side of the triangle is labeled with a length of $14$14 units.

Classify the triangle. Select the three correct options.

Isosceles

A

Acute

B

Scalene

C

Equilateral

D
Easy
< 1min

Consider the diagram below.

Easy
< 1min

Consider the diagram below.

Easy
< 1min

Consider the diagram below.

Easy
< 1min
Sign up to access Practice Questions
Get full access to our content with a Mathspace account
Book a Demo
Sign up for free

Outcomes

II.G.CO.10

Prove theorems about triangles. Theorems include: measures of interior angles of a triangle sum to 180°; base angles of isosceles triangles are congruent; the segment joining midpoints of two sides of a triangle is parallel to the third side and half the length; the medians of a triangle meet at a point.

II.G.SRT.5

Use congruence and similarity criteria for triangles to solve problems and to prove relationships in geometric figures.

What is Mathspace

About Mathspace