Illustrative Mathematics - Geometry - Unit 7 - Lesson 1 - Formative Library | Library

Find the values of x, y, and z.

Write an equation of the altitude from vertex A.

Triangle ABC has vertices at (5,0),(1,6) and (9,3). What is the point of intersection of the triangle’s medians?

Consider the parallelogram with vertices at (0,0),(8,0),(4,6) and (12,6). Where do the diagonals of this parallelogram intersect?

Lines l and p are parallel.
Select all true statements.

Mai wrote a proof that triangle AED is congruent to triangle CEB. Mai's proof is incomplete. How can Mai fix her proof?

We know side AE is congruent to side CE and angle A is congruent to angle C. By the Angle-Side-Angle Triangle Congruence Theorem, triangle AED is congruent to triangle CEB.

This lesson is from Illustrative Mathematics. Geometry, Unit 7, Lesson 1. Internet. Available from https://curriculum.illustrativemathematics.org/HS/teachers/2/7/1/index.html ; accessed 29/July/2021.

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Illustrative Mathematics - Geometry - Unit 7 - Lesson 1

Find the values of x, y, and z.

Write an equation of the altitude from vertex A.

Triangle ABC has vertices at (5,0),(1,6) and (9,3). What is the point of intersection of the triangle’s medians?

Consider the parallelogram with vertices at (0,0),(8,0),(4,6) and (12,6). Where do the diagonals of this parallelogram intersect?

Lines l and p are parallel. Select all true statements.

Mai wrote a proof that triangle AED is congruent to triangle CEB. Mai's proof is incomplete. How can Mai fix her proof?We know side AE is congruent to side CE and angle A is congruent to angle C. By the Angle-Side-Angle Triangle Congruence Theorem, triangle AED is congruent to triangle CEB.

Lines l and p are parallel.
Select all true statements.

Mai wrote a proof that triangle AED is congruent to triangle CEB. Mai's proof is incomplete. How can Mai fix her proof?

We know side AE is congruent to side CE and angle A is congruent to angle C. By the Angle-Side-Angle Triangle Congruence Theorem, triangle AED is congruent to triangle CEB.