Triangles and their angles G.CO.10 Grade 12 ACTASPIRE Practice Test Questions TOC | Lumos Learning

Triangles and their angles G.CO.10 Question & Answer Key Resources Lumos StepUp High School Integrated Mathematics 2 - Workbooks and Online Assessments

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Triangle ABC is an isosceles triangle with angle measure of 75° and 30°. What is the measure of the third angle?

Resource: Question

Question Type: Multiple Choice - Single Answer

Standard(s):HSG.CO.C.10

Standard Description: 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.

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